Wireless speakers / Compare

Marshall Stanmore IV vs Sony ULT TOWER 7

A

Product A: Marshall

Stanmore IV

42 of 96 known

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B

Product B: Sony

ULT TOWER 7

55 of 96 known

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Every value links to where we found it.

Only differences

AMarshall Stanmore IV

BSony ULT TOWER 7

General

7 of 8 differ

Series

Not available

ULT POWER SOUND1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026The guide names the ULT POWER SOUND sound effects. Sony's launch release calls the line the ULT POWER SOUND series.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

1009791, 1009793, 1009296, 1009298, 1009853, 10098541Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Colour selector product ids 1009791 Black and 1009793 Cream, read from the page data. The German store lists 1009296 Black, 1009298 Cream, and also 1009853 Black and 1009854 Cream. John Lewis sells 1009853. Which ids differ by plug or region is not stated.2Maker product pagemarshall.com/de/de/product/stanmore-ivRead 14 October 2026German store page data lists variants STANMORE IV BLACK 1009296 and 1009853, STANMORE IV CREAM 1009298 and 1009854, all priced at EUR 399.11Retailer pagejohnlewis.com/marshall-stanmore-iv-bluetooth-speaker/black/p115377417Read 14 October 2026UK retailer lists manufacturer part number 1009853 for the Black model.

SRS-ULT700, YY7871E1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Quick Start Guide page: Model YY7871E, SRS-ULT700.3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026Model number SRSULT700, the Sony US part number.

GTIN / EAN

7340055423571, 73400554236181Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026EAN in the US page data: 1009791 is 7340055423571 and 1009793 is 7340055423618. EANs of the other ids were not found.

0272429350133Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026UPC 027242935013.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

7 July 20265Press releasegroup.marshall.com/2026/07/07/marshall-unveils-next-generation-acton-iv-and-stanmore-iv-speakers-for-the-homeRead 14 October 2026Launch release dated 7 July 2026.6Press articlesoundguys.com/marshall-acton-iv-and-stanmore-iv-launch-159646Read 14 October 2026Published 2026-07-07, 8:00 AM ET.

1 September 20262Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Sony Electronics release datelined San Diego, 2026-09-01: ULT TOWER MAX, ULT TOWER 7 and ULT TOWER 5.

Status

Available1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Listed on the maker store. The US store showed Sold Out with a Notify Me button on 2026-10-14. The German store and John Lewis take orders.2Maker product pagemarshall.com/de/de/product/stanmore-ivRead 14 October 2026Orderable on the German store.

Available2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Available from September 2026 per the release. Routenote and ChannelNews report orders open in September.3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026Listed with price and rebate. The page shows no stock status.7Press articleroutenote.com/blog/sony-ult-tower-max-7-5-party-speakersRead 20 October 2026Article of 2026-09-16: available to order from Amazon now.9Press articlechannelnews.com.au/sony-turns-up-the-bass-with-new-ult-tower-party-speaker-lineRead 20 October 2026Article: the range is available now.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$399.996Press articlesoundguys.com/marshall-acton-iv-and-stanmore-iv-launch-159646Read 14 October 2026Launch article of 2026-07-07: Stanmore IV USD 399.99. TechRadar gives USD 399.99 and Tom's Guide USD 399. The US store later shows USD 429.99 and MusicTech reports that figure, so the store price changed or one outlet differs. The launch price is stored. Tax is not included in US list prices.8Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Price and release date: USD 399.99 / GBP 349.99 / AU$679, first released July 2026.

$649.992Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Suggested retail price USD 649.99 (CAD 799.99). US list prices exclude tax.4Press articlesoundguys.com/sony-ult-power-sound-wireless-speakers-2026-162263Read 20 October 2026Article of 2026-09-01: ULT Tower 7 MSRP USD 649.99.10Reviewtechradar.com/audio/wireless-bluetooth-speakers/sony-ult-tower-7-reviewRead 20 October 2026Review lists USD 649.99, GBP 499 and AUD 799.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€3997Press articlehifi.blog/marshall-acton-iv-and-stanmore-iv-more-room-more-bass-more-marshallRead 14 October 2026Article of 2026-07-08 lists Stanmore IV at EUR 399. Stereonet of 2026-07-09 also gives EUR 399. The German maker store shows EUR 399 including VAT.

€6005Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review of 2026-10-04 lists EUR 600 as MSRP. LB Tech Reviews lists EUR 599 as the suggested price. Neither names a country. The maker's German price was not found.6Press articlegagadget.com/en/724224-sonys-new-ult-tower-speakers-go-from-450-party-starter-to-2150w-beastRead 20 October 2026Article of 2026-09-02 lists ULT TOWER 7 at EUR 600 and USD 649.99, from Sony's launch material. Stereo Guide also lists EUR 600 as MSRP. The country is not named.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, DE, FR, GB1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026US store page with USD price.2Maker product pagemarshall.com/de/de/product/stanmore-ivRead 14 October 2026German store sells it and shows an add to cart button.11Retailer pagejohnlewis.com/marshall-stanmore-iv-bluetooth-speaker/black/p115377417Read 14 October 2026Sold in the UK at GBP 349.99.12Retailer pageldlc.com/en/product/PB00747537.htmlRead 14 October 2026Sold in France at EUR 399.95 for Black.

US, AU, JP2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026US availability through Sony.com, Best Buy, Amazon and authorized dealers.3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026US retailer. Regular price USD 649.99, shown with a USD 100 rebate until 2026-11-01.8Press articlehifi.fan/stories/sony-announces-ult-tower-7-bluetooth-speaker-with-deep-bass-and-portable-designRead 20 October 2026Article of 2026-09-02: release in Japan on 2026-09-18 at an estimated market price of about 85,000 yen.9Press articlechannelnews.com.au/sony-turns-up-the-bass-with-new-ult-tower-party-speaker-lineRead 20 October 2026Article of 2026-09-15: ULT Tower 7 at AUD 799 in Australia.

ColoursiThe maker's own colour names

Black, Cream1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Colorways: Black, Cream.

Black3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026Colour: Black.5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: Black.

Speaker typeiHome covers speakers made to stay in one place, including smart speakers. A speaker with Wi-Fi or a voice assistant can be of any type.

Home1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Page: Bluetooth home speaker.

Party2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026The release calls the three models bass-powered party speakers.

Audio

11 of 18 differ

Audio channelsiSound channels reproduced by one speaker. Pairing two speakers for stereo is separate.

Stereo1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Stereo/mono: Stereo. Sound channels of one speaker.

Not available

Audio driversiPowered audio transducers in one speaker. Passive radiators are counted separately. Circular diameter and rectangular width and height have separate columns. Per-driver power must state continuous or RMS basis and battery or mains operation in the source note.

AMarshall Stanmore IV

Driver type	Count	Diameter (mm)
Woofer	1	127
Tweeter	2	19.05

Source1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026One 5 inch woofer and two 0.75 inch tweeters with waveguides. Converted exactly to 127 mm and 19.05 mm. The page lists amplifier ratings only, so no per-driver power is stored. Bass-reflex cabinet, so no passive radiator.

BSony ULT TOWER 7

Driver type	Count	Diameter (mm)
Woofer	1	280
Midrange	2	120
Front tweeter	2	50
Rear tweeter	2	40

Source1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, Speaker section: 3-way, bass reflex. Woofer unit approximately 280 mm diameter (1), midrange unit approximately 120 mm (2), tweeter unit approximately 50 mm (2), tweeter unit approximately 40 mm (2). The guide does not say which tweeters face the front. hifi.fan says two 50 mm tweeters face the front and two 40 mm tweeters face the rear. No per-driver power is published. The cabinet is bass reflex, so no passive radiator is stored.7Press articleroutenote.com/blog/sony-ult-tower-max-7-5-party-speakersRead 20 October 2026Article: one 280 mm circular woofer, two mid-range drivers and four tweeters. This agrees with the Help Guide.8Press articlehifi.fan/stories/sony-announces-ult-tower-7-bluetooth-speaker-with-deep-bass-and-portable-designRead 20 October 2026Article: one 280 mm circular woofer, one 120 mm midrange and four tweeters, two 50 mm at the front and two 40 mm at the rear. It says one midrange. The Help Guide, Stereo Guide and Routenote say two midrange drivers, so the guide count is stored.10Reviewtechradar.com/audio/wireless-bluetooth-speakers/sony-ult-tower-7-reviewRead 20 October 2026Spec table: 1x 280 mm woofer, 2x 120 mm mid-range and 4x 50 mm tweeters including 2 rear-facing. The maker's Help Guide gives two 50 mm and two 40 mm tweeters, so the guide sizes are stored.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

Not available

Not available

Rated audio poweriMaker-published total rated continuous audio output. Battery power is used for portable speakers when mains and battery ratings differ. Peak marketing power is separate.

Not available

Not available

Rated audio power on mainsiTotal rated continuous audio output with external power. Store a separate battery rating when the maker publishes both.

Not available

Not available

Audio output power (unspecified rating)iMaker- or reviewer-published audio output power whose continuous or peak rating basis is not stated. This is separate from rated continuous output and explicitly published peak output.

110W9Reviewheadphonecheck.com/test/marshall-stanmore-ivRead 14 October 2026Review: three Class D amplifiers, 60 W for the woofer and 2 x 25 W for the tweeters, 110 W in total. The maker lists only the amplifier ratings, with no continuous, RMS or peak basis, so the total goes in the unspecified-rating field. The review also prints 2.99 kg for the weight, which conflicts with the maker's 3.99 kg and is not used.

420W5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: amplifier up to 420 W, and the article notes this is not listed on the product page as RMS continuous power. Routenote's copy of Sony's launch material also says up to 420 W. No basis is stated, so the value goes in the unspecified-rating field.6Press articlegagadget.com/en/724224-sonys-new-ult-tower-speakers-go-from-450-party-starter-to-2150w-beastRead 20 October 2026Article lists output power 420 W for ULT TOWER 7.7Press articleroutenote.com/blog/sony-ult-tower-max-7-5-party-speakersRead 20 October 2026Article of 2026-09-16: ULT TOWER 7 with up to 420 W of output. No basis stated.

Peak audio poweriExplicitly published peak audio output. Never substitute for rated continuous output.

Not available

Not available

Frequency response lower limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

36Hz1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Frequency range 36-38,000 Hz. Tolerance and mode are not stated. HeadphoneCheck prints 37 Hz, which is not used.

Not available

Frequency response upper limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

38kHz1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Frequency range 36-38,000 Hz. Tolerance and mode are not stated.

Not available

Signal-to-noise ratio (claimed)

Not available

Not available

Adjustable equalizeriUser-adjustable frequency bands. Selecting fixed sound presets alone does not qualify.

Yes8Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026The Marshall app saves three EQ calibrations using a five-band equalizer. The M button cycles them.9Reviewheadphonecheck.com/test/marshall-stanmore-ivRead 14 October 2026App: five presets plus a 5-band EQ with three memory slots.

Yes2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Custom EQ is available in the Sony | Sound Connect app.

Equalizer bandsiNumber of user-adjustable frequency bands. Do not count sound presets.

58Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Five-band equalizer in the Marshall app.9Reviewheadphonecheck.com/test/marshall-stanmore-ivRead 14 October 20265-band EQ.

103Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 202610-band equalizer through the Sony | Sound Connect app. SoundGuys and Stereo Guide also say 10 bands. The Help Guide gives no band count.4Press articlesoundguys.com/sony-ult-power-sound-wireless-speakers-2026-162263Read 20 October 2026Lineup has a 10-band EQ.5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: 10-band equalizer in the Sony Sound Connect app.

Automatic sound adjustmentiAdjusts audio to placement or playback conditions. Keep the named feature and conditions in the source note.

Yes8Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026The app has placement compensation, which optimizes the audio output for the speaker's position. The maker page calls it room calibration. Dynamic Loudness is a separate loudness balance feature.

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Sound Connect app, Sound Field Optimization: the speaker detects its surrounding environment and automatically adjusts the sound. In some cases the surrounding environment may prevent optimization. The speaker also adjusts its sound automatically when placed horizontally.

Sound modesiNamed playback modes. Battery extension modes are also qualified in battery source notes.

Not available

ULT1, ULT2, FLAT, LIVE1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026ULT button cycles ULT1, ULT2 and FLAT. ULT1 emphasizes deep bass and ULT2 emphasizes power. LIVE is added by Sony's release and hifi.fan, and must be selected or assigned in the Sound Connect app.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026ULT button offers ULT1, ULT2, FLAT and LIVE. LIVE recreates the spacious feel of a live performance and is selected or assigned in the Sound Connect app.8Press articlehifi.fan/stories/sony-announces-ult-tower-7-bluetooth-speaker-with-deep-bass-and-portable-designRead 20 October 2026Article: ULT1, ULT2, FLAT and LIVE. LIVE must be enabled in the Sound Connect app.

Wireless stereo pairingiTwo compatible speakers can play separate left and right channels.

Not available

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Stereo Pair needs 2 ULT TOWER 7 units connected over Bluetooth. One speaker plays the left channel and the other the right channel.

Speaker link protocolsiNamed systems for linking compatible speakers, such as PartyBoost, Auracast or Party Connect. Linking support does not establish compatibility across all models.

Auracast1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Multi-speaker connectivity through Auracast broadcasts. Marshall Heddon, sold separately, is the broadcaster for older Marshall speakers and for Stanmore IV.10Reviewtomsguide.com/audio/smart-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Auracast-enabled and connects to its Homeline IV sibling. Multi-speaker connectivity is listed as unlimited with the Heddon hub. No numeric maximum is stored.

Party Chain, Stereo Pair1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Stereo Pair and Party Chain. Party Chain cannot be used while Stereo Pair is active. Devices that support the Wireless Party Chain or Party Connect functions are not applicable for connection.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Party Chain, and a stereo configuration of two speakers.

Max linked speakersiPublished maximum in a speaker group. A stereo pair is recorded separately. A figure such as 100+ is stored as 100.

Not available

1001Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Party Chain: you can connect up to 100 speakers. Stereo Pair is a separate two-speaker mode.

Max Bluetooth group speakersiPublished maximum speakers in one Bluetooth playback group, including the first speaker. Source notes name the compatible models or families, linking system and firmware requirements. Wi-Fi groups and concurrent Bluetooth source devices are excluded. A stereo pair alone does not establish the maximum when other Bluetooth linking systems are supported. A figure such as 100+ is stored as 100.

Not available

1001Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Party Chain uses an Auracast broadcast and connects up to 100 compatible speakers. Compatible models are listed at sony.net/partychain. Every speaker needs the latest software. Wireless Party Chain and Party Connect devices are excluded. The group includes the broadcasting speaker.

Connectivity

9 of 16 differ

Bluetooth audio playbackiPlays audio streamed over Bluetooth from a phone or other source. Bluetooth used only for setup or app control does not count.

Yes1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 20265Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026

Bluetooth versioniVersion of the Bluetooth radio. Some Wi-Fi speakers use Bluetooth only for setup. See Bluetooth audio playback.

5.31Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Wireless connectivity: Bluetooth 5.3.

5.33Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026Spec copy of the Sony page: Bluetooth 5.3 with SBC, AAC and LDAC. The Sony Help Guide for this model does not print a Bluetooth version. Stereo Guide and LB Tech Reviews also give 5.3.5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: Bluetooth 5.3.10Reviewtechradar.com/audio/wireless-bluetooth-speakers/sony-ult-tower-7-reviewRead 20 October 2026Spec table: Bluetooth 5.3.

Bluetooth codecsiExplicitly supported receive codecs. Bluetooth version alone does not establish codecs.

SBC, AAC, LDAC, LC31Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Codecs: SBC, AAC (MPEG-2), LDAC, LC3. Receive codecs.

SBC, AAC, LDAC1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Supported codecs: SBC, AAC and LDAC for music playback via an A2DP connection.5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: SBC, AAC and LDAC.

Bluetooth profiles

Not available

A2DP, AVRCP1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Listening to music via a BLUETOOTH connection: A2DP and AVRCP.

Bluetooth LE AudioiExplicit LE Audio support. Bluetooth LE for app control alone does not qualify.

Yes3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026The factory reset steps name a second Bluetooth entry, STANMORE IV [LE], which is the LE Audio device. HeadphoneCheck and Notebookcheck also state LE Audio support.9Reviewheadphonecheck.com/test/marshall-stanmore-ivRead 14 October 2026Review: Bluetooth 5.3 with LE Audio and Auracast support.

Not available

AuracastiExplicit Auracast support. Sending, receiving and speaker-group roles belong in source notes.

Yes1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Wireless connectivity lists Auracast. FAQ: Stanmore IV is an Auracast receiver and joins a broadcast from a Marshall broadcaster such as Heddon, or from phones with the Listen to Broadcast feature in the Marshall app. It does not state a broadcaster role.4Maker product pagemarshall.com/us/en/support/speakers/support-for-stanmore-ivRead 14 October 2026Stanmore IV is an Auracast receiver and can be added to a multi-speaker setup using a Marshall broadcaster such as Heddon.

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Party Chain uses the Auracast broadcast for connection. The speaker connected to the playback device broadcasts the music and the other speakers receive it. Sony does not say whether other Auracast devices can join.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Party Chain uses Auracast broadcast to connect multiple compatible Sony speakers and synchronizes music and lighting.5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: Auracast supported via Party Chain for syncing up to 100 compatible Sony speakers. LE Audio is not mentioned.

MultipointiConcurrent Bluetooth source connections. Pairing memory and speaker-to-speaker linking do not qualify.

Yes1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Bluetooth Multipoint Connectivity: Yes.

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026You can connect the speaker concurrently with up to 2 BLUETOOTH devices (multipoint connection).5Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/sony-ult-tower-7-reviewRead 20 October 2026Review: multipoint supported.

Multipoint source devicesiMaximum concurrently connected Bluetooth source devices, not remembered pairings.

23Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Pairing with a Bluetooth device: can connect to 2 Bluetooth devices at a time and remembers up to 8 previously paired devices.

21Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Up to 2 BLUETOOTH devices at the same time.

Bluetooth range (claimed)iMaker-claimed Bluetooth range to the source device. Test conditions belong in the source note.

10m1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Bluetooth range 10 m / 32.8 ft.

30m1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026About 30 m (98.4 ft) maximum communication range, line of sight. It shortens with obstacles and 2.4 GHz interference.

Wi-FiiBuilt-in Wi-Fi, for audio streaming, setup or control.

No8Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Review states the speaker has no Wi-Fi connectivity.10Reviewtomsguide.com/audio/smart-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Review: Stanmore IV has no Wi-Fi streaming and no voice assistant support.12Retailer pageldlc.com/en/product/PB00747537.htmlRead 14 October 2026Retailer spec: Wi-Fi No. It also lists width 350, height 188 and depth 203 mm, which conflicts with the maker's 350 x 203 x 185 mm and is not used.

Not available

Wi-Fi standardsiOne 802.11 name per item, such as 802.11ax. A Wi-Fi generation is written as its standard, so Wi-Fi 5 is 802.11ac and Wi-Fi 6 is 802.11ax. Older standards are listed only when a source names them.

Not available

Not available

Network audio protocolsiNamed systems that stream audio to the speaker over the home network. AirPlay is written as AirPlay 2. Chromecast built-in is written as Google Cast. Other names follow the maker, such as Spotify Connect.

Not available

Not available

USB audio inputiPlayback from a connected computer or phone through USB. Charging, service ports and USB flash-drive playback do not qualify.

Not available

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Listening to music from a computer or a smartphone (USB-C): select USB-C on the FUNCTION dial and play on the computer. The specifications list UAC 1.0 for the USB Type-C port. Mass Storage is not supported on USB-C.

USB drive playbackiPlayback of audio files on a connected USB storage device.

Not available

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Listening to music from a USB device (USB-A): select USB-A on the FUNCTION dial and press the playback button.

USB audio file formats

Not available

MP3, WMA, WAV1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Supported audio file formats from USB-A: MP3 [.mp3], WMA [.wma] and WAV [.wav].

PortsiPhysical speaker connectors. Record charging, audio input, power output and service roles separately. A shared microphone and guitar jack is one port. A combo jack that takes XLR and 6.35 mm plugs is 6.35 mm audio, and the role names XLR. Optical is a TOSLINK digital audio socket.

AMarshall Stanmore IV

Connector	Count	Role
3.5 mm audio	1	AUX audio input on the top panel
RCA	1	Stereo RCA audio input pair on the bottom panel, preamp required for turntables
AC power	1	Mains power input, 100 to 240 V

Source1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Wired connectivity AUX 3.5 mm and RCA. Mains input voltage 100-240 V. Port positions and roles are from the manual.3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Top panel AUX 3.5 mm audio input. Bottom panel stereo RCA inputs, with an RIAA preamp for turntables, and the mains power input.

BSony ULT TOWER 7

Connector	Count	Role
AC power	1	AC input jack behind the rear cap
USB-A	1	USB storage playback and charging output for other devices, 5 V / 1.5 A maximum
USB-C	1	USB audio input from a computer or smartphone and charging output for other devices, 5 V / 1.5 A maximum
6.35 mm audio	1	MIC jack for a dynamic microphone
RCA	1	LINE 1 audio input for a DJ device
Other	1	LINE 2 XLR balanced audio input for a DJ device
Other	1	LINE OUT XLR audio output to the LINE 2 jack of another speaker

Source1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Parts and controls and Specifications: AC input jack, USB-C and USB-A ports behind the rear cap, MIC jack (6.3 mm), LINE 1 jack (RCA), LINE 2 jack (XLR) and LINE OUT jack (XLR). DC OUT is DC 5 V maximum 1.5 A on both the USB-A and USB-C ports. The RCA jack is one stereo pair. The ports are not water resistant.

Controls and software

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SpeakerphoneiBuilt-in microphone and call support, through a connected phone or a voice assistant's calling. A microphone used only for voice commands does not count. Microphone inputs for karaoke are separate.

No1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Microphone system: No.

Not available

Voice assistantsiVoice assistants explicitly usable through the speaker, such as Amazon Alexa, Google Assistant, Siri or Sonos Voice Control. State whether a connected phone is required.

Not available

Not available

Controls

Bass knob, Treble knob, Volume knob, Power switch, Media jog for play, pause and track change over Bluetooth, Customisable M-button, Source button1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Top panel controls: bass, treble, volume, power switch, media jog, M-button, source button.3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Top panel: AUX input, source selector, audio controls for volume, bass and treble, M-button, media control, power switch. Pull the power switch to turn on.

Power button, Bluetooth button, Playback button, ULT button with volume dial, FUNCTION dial, Party Chain button, Stereo Pair button, STAMINA button, Light button, Echo button, Key control buttons, MIC level knob1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Parts and controls list: power button, BLUETOOTH button, playback button, ULT button with volume dial, FUNCTION dial (BLUETOOTH, LINE 1, LINE 2, USB-A, USB-C), Party Chain button, STEREO PAIR button, STAMINA button, LIGHT button, ECHO button, KEY CONTROL buttons and MIC level knob.

Companion app

Marshall1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Compatible apps: Marshall app.

Sony | Sound Connect1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Using the Sound Connect app: speaker controls and status, Sound Effect, Sound Field Optimization, ULT button settings, Party Now, Battery Care, STAMINA, Lighting Mode and software update.

App platforms

iOS, Android3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Closing page offers the Marshall app on Google Play and the App Store.

iOS, Android1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026The app is downloaded from the Google Play store or the App Store.

User firmware updates

Yes3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Troubleshooting: connect to the Marshall app and follow the in-app instructions to get the latest firmware.4Maker product pagemarshall.com/us/en/support/speakers/support-for-stanmore-ivRead 14 October 2026Ensure the firmware is up to date by connecting the product to the Marshall app.

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026How to keep the software up to date: apply updates to the speaker software with the Sound Connect app.

Built-in lightingiDecorative or ambient lighting. Status, battery, connection and microphone indicator LEDs alone do not qualify.

Not available

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Lighting function: the speaker lights up with the music. The LIGHT button changes the lighting mode or turns it off.

Lighting modes

Not available

Beat, Wave, Mellow2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026New lighting modes BEAT, WAVE and MELLOW.8Press articlehifi.fan/stories/sony-announces-ult-tower-7-bluetooth-speaker-with-deep-bass-and-portable-designRead 20 October 2026Article: three lighting modes BEAT, WAVE and MELLOW.

Smart home

None of 3 known

Matter controlleriCan add and control Matter devices. Being a Matter device alone does not count.

Not available

Not available

Thread border routeriConnects Thread smart home devices to the home network.

Not available

Not available

Zigbee hubiA built-in Zigbee radio that controls Zigbee smart home devices.

Not available

Not available

Battery and charging

9 of 17 differ

Built-in battery

No8Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Designed for the home and powered from the mains. No battery is mentioned.10Reviewtomsguide.com/audio/smart-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Spec table: Battery life: Mains-powered.

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026The speaker runs on the supplied AC power cord or the built-in rechargeable battery.

Playback time (claimed)iMaximum maker-claimed music playback on one charge in normal playback mode. Battery extension or reduced-bass boost modes belong in battery_life_boost_h. Record volume and lighting conditions in the source note.

Not available

30h1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Battery hours: approximately 30 hours with Battery Care disabled, a BLUETOOTH connection, volume 17, ULT1 or ULT2 and lighting off. Approximately 15 hours with lighting on at the same settings. Approximately 3 hours at volume 50 (maximum) with lighting on. Measured by Sony with a specified music source. The STAMINA option disables lighting and sound effects but its hours are not published.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Up to 30 hours when ULT1/2 is on, volume 17 and lighting off. Actual performance varies. This matches the Help Guide.

Playback with battery extension (claimed)iTotal claimed runtime with the named battery extension mode enabled. Store the total, not only the extra hours. Keep sound and lighting restrictions in the source note.

Not available

Not available

Battery energyiPublished battery pack energy. Do not calculate from an assumed voltage.

Not available

Not available

Battery capacityiPublished pack capacity at the voltage in battery_voltage_v. Do not substitute power-bank output capacity. A figure written per cell, such as 5000mAh*2, is not a pack capacity unless the maker states the pack figure.

Not available

Not available

Nominal battery voltage

Not available

Not available

Battery chemistry

Not available

Lithium-ion1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, Power: built-in lithium-ion battery. No capacity is published.

User-replaceable batteryiBattery that the maker documents as replaceable by the user. Service replacement does not qualify.

Not available

Not available

Full charge timeiTime from discharged to full under the maker conditions. Adapter rating and simultaneous use belong in source notes.

Not available

3h1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Charging completes in about 3 hours for an empty battery while the speaker is powered off.

Quick charge duration

Not available

10min1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 202610 minutes of charging provide approximately 180 minutes of music playback.

Playback after quick chargeiClaimed music playback after quick_charge_min of charging. Source conditions apply.

Not available

3h1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026180 minutes of playback, with Battery Care disabled, volume 17, ULT1 or ULT2 and lighting off.

Charging input ratingiPublished speaker input voltage and current. An adapter rating alone does not establish device input.

Not available

AC 120 V, 60 Hz in North America. AC 100 V, 50/60 Hz in Japan. AC 120 V to 240 V, 50/60 Hz in other regions1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, Power: Japan AC 100 V, 50/60 Hz. North America AC 120 V, 60 Hz. Other regions AC 120 V - 240 V, 50/60 Hz. Power consumption about 112 W. No current rating of the input is published.

Max charging inputiPublished maximum charging input. USB audio power requirements and adapter output are separate.

Not available

Not available

USB Power Delivery charging

Not available

Not available

Charges other devices

Not available

Yes1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026The built-in battery can supply power to a USB device through the USB-C or USB-A port, also without an AC outlet.

Max power-bank outputiPublished power delivered by the speaker to another device. Output voltage and current belong in the source note.

Not available

7.5W1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, DC OUT: DC 5 V / maximum 1.5 A on each port. 5 V x 1.5 A is 7.5 W per port. The guide does not say if both ports can deliver this at once.

Wireless chargingiThe speaker battery can be charged wirelessly. Wireless power output to another device is separate.

Not available

Not available

Durability

2 of 5 differ

Dust and water ratingiExact published IP rating. Keep separate ratings, such as IP68 and IP69, as separate entries.

Not available

IPX41Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Notes on water resistant feature: water resistant performance equivalent to IPX4, only with the cap securely closed and the speaker placed vertically. Not water resistant when placed horizontally.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026ULT TOWER 7 and ULT TOWER 5 have an IPX4 rating in a vertical position. It applies only when the waterproof port cover is properly closed.

Floats

Not available

Not available

Drop resistanceiExplicit maker claim or defined drop test. Do not infer from rugged wording.

Not available

Not available

Drop test heightiMaker-published tested height. Surface and conditions belong in source notes.

Not available

Not available

Carry featuresiPublished handles, straps, carabiners or wheels.

Not available

Handles, Caster wheels1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Carrying: the speaker has caster wheels and handles.2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Upgraded wheels with wider treads and carry handles with a more comfortable grip.

Measured

None of 6 known

Playback time (measured)iReviewer-measured playback per charge. Volume, lighting, sound mode, firmware and connection belong in the source note.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum SPL. Distance, test method and power source belong in source notes.

Not available

Not available

Low-frequency extension (measured)iReviewer-measured low-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured high-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

Audio latency (measured)iReviewer-measured source-to-speaker latency. Source device, app, codec, firmware and connection belong in source notes. App compensation may affect results.

Not available

Not available

Full charge time (measured)iReviewer-measured time from empty to full. Power adapter and method belong in the source note.

Not available

Not available

Dimensions and weight

3 of 3 differ

DimensionsiSpeaker body width, height and depth on explicitly identified axes. Unlabeled tuples do not establish axis meanings. Handle, strap and orientation conditions belong in the source note.

Width350Height203Depth185mm(13.8 × 8 × 7.3 in)1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Physical unit: width 350 mm, height 203 mm, depth 185 mm. The product details block prints 350 x 203 x 185 mm.

Width421Height710Depth347mm(16.6 × 28 × 13.7 in)1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, Dimensions (W x H x D) including projecting parts and controls: approximately 421 x 710 x 347 mm.

WeightiSpeaker mass including its battery. Excludes packaging, charger and removable carry accessories unless the source states otherwise.

3,990g(8.8 lb)1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Weight 3.99 kg / 8.79 lb.10Reviewtomsguide.com/audio/smart-speakers/marshall-stanmore-iv-reviewRead 14 October 2026Spec table: 8.81 lbs, which matches 3.99 kg.

22,800g(50.3 lb)1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Specifications, Mass including battery: approximately 22.8 kg.

Body materials

MDF cabinet, PU leather covering1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026MDF cabinet made from FSC 100%-certified material. The covering is leather-like material, named PU leather in the maker's launch release.5Press releasegroup.marshall.com/2026/07/07/marshall-unveils-next-generation-acton-iv-and-stanmore-iv-speakers-for-the-homeRead 14 October 2026Release names signature PU leather wrapping and an MDF cabinet from FSC 100%-certified wood.

Plastic (about 20% recycled)2Press releaseprnewswire.com/news-releases/sony-electronics-expands-its-ult-power-sound-series-lineup-with-three-new-bass-powered-party-speakers-302865965.htmlRead 20 October 2026Approximately 20% of the total plastic used in the ULT TOWER 7 is recycled plastic, estimated by weight and excluding packaging and manuals.

Certifications

1 of 1 differ

FCC IDs

Not available

Not available

Other certifications

FSC 100% certified wood for the MDF cabinet (FSC C225755)1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026FSC 100% certified wood (FSC C225755). The claim applies only to the wood cabinet.

Not available

In the box

1 of 1 differ

In the box

Stanmore IV speaker, Mains lead, Quick start guide, Legal and safety information1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Box contents: Stanmore IV speaker, mains lead, quick start guide, legal and safety information.

ULT TOWER 7 speaker, AC power cord (mains lead), Reference Guide1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Notes: refer to the Reference Guide supplied with the speaker. The supplied AC power cord (mains lead) is named in the charging steps. Abt lists the speaker and one AC power cord.3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026One ULT TOWER 7 speaker and one AC power cord.

Links

Not compared

Product page

www.marshall.com/us/en/product/stanmore-iv1Maker product pagemarshall.com/us/en/product/stanmore-ivRead 14 October 2026Maker's US product page for Stanmore IV.

Not available

Spec sheet

Not available

Not available

Manual

assets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdf3Owner's manualassets.ctfassets.net/javen7msabdh/1Rv35yGbbxUe5eqN41fCsx/9c63350f5423c02844068a220dca6e81/Marshall_Stanmore_IV_OLM_260414_R1_2.pdfRead 14 October 2026Full online manual, 260414 R1.2, English first. Combined PDF with many languages.

helpguide.sony.net/speaker/7871/v1/en/print.pdf1Owner's manualhelpguide.sony.net/speaker/7871/v1/en/print.pdfRead 20 October 2026Sony online Help Guide for ULT TOWER 7, printable PDF of 105 pages, Copyright 2026.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

2years13Maker product pagemarshall.com/us/en/policies/warrantyRead 14 October 2026US market. Marshall's policy of 2025-02-13 gives a two-year limited warranty on speakers bought from marshall.com or a US authorized dealer, counted from purchase or delivery. The maker's support page says one year for all products and an exclusive two years for purchases on marshall.com. The two pages differ for dealer purchases, so two years applies to marshall.com purchases only. Statutory rights are excluded.14Maker product pagemarshall.com/us/en/support/warrantyRead 14 October 2026Support page: all products carry a 1-year warranty, and speakers bought online at marshall.com carry an exclusive 2-year warranty.

1year3Retailer pageabt.com/Sony-ULT-TOWER-7-Wireless-Party-Speaker-in-Black-SRSULT700/p/248760.htmlRead 20 October 2026US market: 1-year limited parts and 1-year limited labor warranty.

Both are also in the API. Back to all wireless speakers.