Wireless speakers / Compare

Sony ULT FIELD 5 vs Ultimate Ears EPICBOOM

A

Product A: Sony

ULT FIELD 5

55 of 96 known

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B

Product B: Ultimate Ears

EPICBOOM

44 of 96 known

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All 96 fields

Every value links to where we found it.

Only differences

ASony ULT FIELD 5

BUltimate Ears EPICBOOM

General

6 of 8 differ

Series

ULT POWER SOUND1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

BOOM1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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

SRS-ULT50, YY7859E4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

GTIN / EAN

Not available

Not available

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

9 April 20251Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

6 September 20234Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026

Status

Available2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Available1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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.

$329.991Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026US suggested retail price at launch, excluding tax.

$349.994Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026US launch MSRP $349.99 before tax.

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.

€2997Press releasesony.de/presscentre/sony-erweitert-die-ult-power-sound-serie-um-drei-neue-lautsprecher-und-zelebriert-den-launch-in-kooperation-mit-dem-superstar-post-malone-c07f7bRead 8 October 2026German launch UVP including VAT. FIELD 5 is explicitly 299 Euro. Regional euro release prices vary.

Not available

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

US, CA1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

US1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

ColoursiThe maker's own colour names

Black, Off White1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

Charcoal Black, Cotton White1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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.

Portable2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Portable1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

Audio

9 of 18 differ

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

Stereo6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026

Stereo5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026Public Music verdict explicitly states stereo playback without downmixing to mono.

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.

ASony ULT FIELD 5

Driver type	Count	Diameter (mm)
Woofer	1	Not available
Tweeter	2	46

Source4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Woofer rectangular dimensions have no axis labels and are omitted. Tweeter diameters are approximate.

BUltimate Ears EPICBOOM

Driver type	Count
Mid-high frequency	2
Woofer	1

Source1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026Product embedded technical specs: two active mid-high frequency transducers and one woofer. Diameters omitted due to differing maker support and launch figures.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

25Reviewsoundguys.com/sony-ult-field-5-review-party-ready-but-with-room-to-improve-135558Read 8 October 2026

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.

Not available

Not available

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.

Not available

55Hz2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026Support frequency response 55 Hz to 20 kHz, +/-3 dB at 80 dB SPL, free field.

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.

Not available

20kHz2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026Support frequency response 55 Hz to 20 kHz, +/-3 dB at 80 dB SPL, free field.

Signal-to-noise ratio (claimed)

Not available

Not available

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

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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

103Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

Not available

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

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Sound Field Optimization adapts to playback conditions and environment. Disabled with Stereo Pair or Party Connect.

Yes3Owner's manualsupport.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOMRead 8 October 2026Adaptive EQ control explicitly includes EPICBOOM and adjusts sound for the environment. Internal microphone is for acoustic adjustment, not calls.

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

ULT1, ULT2, Custom EQ, STAMINA4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026STAMINA disables sound effects including ULT. No claimed STAMINA runtime is stated.

Signature, Bass Boost, Game/Cinema, Podcast/Vocal, Deep Relaxation, Outdoor Boost4Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026Maker launch lists five BOOM app EQ presets and Outdoor Boost. Current product technical text lists four presets but does not explicitly deny Podcast/Vocal.

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

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

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

Party Connect4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Party Connect supports compatible Sony speakers. Compatibility may require current firmware. It is distinct from Wireless Party Chain.

PartyUp3Owner's manualsupport.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOMRead 8 October 2026PartyUp requires up-to-date BOOM app and speaker firmware. BOOM, MEGABOOM, EPICBOOM and HYPERBOOM families supported. No precise maximum imported because maker product pages say over 150.

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

1004Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Party Connect section. Up to 100 physical speakers in one compatible group, including the first speaker.

Not available

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

Not available

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.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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

5.34Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026About the BLUETOOTH wireless technology. FIELD 3 states version 5.2, despite the SoundGuys review stating 5.3.

5.12Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026

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

SBC, AAC, LDAC4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

Bluetooth profiles

A2DP, AVRCP, SPP3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

A2DP1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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

Not available

Not available

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

Not available

Not available

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

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

No5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026Public Music/Outdoors verdict explicitly lists no Bluetooth multi-device pairing.

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

24Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

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

30m4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026About 30 m. Obstacles and radio interference reduce this distance.

55m1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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

No6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026

No5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026Public Wi-Fi row explicitly says No.

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.

No4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Parts and controls explicitly state that USB-C is not compatible with music playback.

Not available

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

No4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026The only USB port is documented as incompatible with music playback.

Not available

USB audio file formats

Not available

Not available

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.

ASony ULT FIELD 5

Connector	Count	Role
USB-C	1	Charging input and power-bank output
3.5 mm audio	1	Stereo audio input

Source4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

BUltimate Ears EPICBOOM

Connector	Count	Role
USB-C	1	Charging input

Source2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026

Controls and software

5 of 8 differ

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.

No6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026Public speakerphone cell states No. Voice assistant verdict says there is no microphone for voice assistance. SoundGuys control table call row is not used.

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

Power, Bluetooth pairing, Play/pause, Volume, ULT sound mode, Speaker linking, Battery level and battery care, Lighting4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Power, Bluetooth pairing, Volume up/down, Play/pause, Next/previous track, Magic Button playlist shortcut, Outdoor Boost, Battery level3Owner's manualsupport.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOMRead 8 October 2026

Companion app

Sony | Sound Connect4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

UE | BOOM2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026

App platforms

Android, iOS4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

iOS, Android2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026

User firmware updates

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Yes3Owner's manualsupport.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOMRead 8 October 2026Speaker Updates and PartyUp sections explicitly document OTA updates via the BOOM app.

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

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

Lighting modes

Not available

Not available

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

7 of 17 differ

Built-in battery

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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.

25h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker, pp. 12-13. Approximate 25 h, Bluetooth, volume 18/50, ULT1/2 on, lights off, Battery Care off. With lights on at the same volume the claim is 10 h. Maximum volume with lights is 2.5 h.

17h1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026Embedded technical specs qualify up to 17 hours at default volume 45%. Actual runtime varies with use, settings and environmental conditions.

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

22.5Wh2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026Built-in Li-ion rechargeable battery 22.5 Wh. No pack voltage or mAh inferred.

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

Lithium-ion4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Lithium-ion1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

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.

3.5h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker. About 3.5 h from empty to full, speaker off, Battery Care off, using USB PD 9 V/3 A adapter.

3h2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026About three hours empty to full with USB PD charger rated 15 W or above. Does not establish maximum speaker input power.

Quick charge duration

10min4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

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

1.67h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker. 100 minutes at volume 18/50, ULT1/2 on, lights off. Battery Care off, USB PD 9 V/3 A adapter.

Not available

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

5 V DC, 3 A or 9 V DC, 3 A4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Not available

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

Not available

Not available

USB Power Delivery charging

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Yes2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026Maker explicitly specifies PD charging adapter, 15 W or above. Recommended adapter voltage list is not treated as speaker input.

Charges other devices

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. USB-C DC output 5 V, maximum 1.5 A. Output wattage is not explicitly published.

Not available

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

Not available

Not available

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

Not available

Not available

Durability

4 of 5 differ

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

IP66, IP673Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026Requires the cap to be securely closed. Accessories and exposed connectors are not water or dust resistant.

IP674Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026

Floats

Yes6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026Public intro and outdoor verdict explicitly state it floats.

Yes4Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026

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

Not available

Yes5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026

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

Not available

1m5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026Public Outdoors verdict attributes one-meter drop/fall tolerance to the maker. Surface and test method not stated.

Carry featuresiPublished handles, straps, carabiners or wheels.

Detachable shoulder strap2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Built-in strap5Reviewrtings.com/speaker/reviews/ultimate-ears/epicboomRead 8 October 2026

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.

Width320Height144Depth125mm(12.6 × 5.7 × 4.9 in)4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Approximate W × H × D, including projecting parts and controls.

Not available

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

3,300g(7.3 lb)4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Approximate mass including battery.

1,979g(4.4 lb)1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

Body materials

Fabric grille, Plastic body5Reviewsoundguys.com/sony-ult-field-5-review-party-ready-but-with-room-to-improve-135558Read 8 October 2026

Post-consumer recycled plastic, Recycled polyester fabric4Press releasenews.logitech.com/press-releases/news-details/2023/New-EPICBOOM-Speaker-Launches-with-Fresh-Portable-Design-and-Huge-360-Sound/default.aspxRead 8 October 2026Fabric 100% PCR polyester. Plastic components minimum 59% PCR. Packaging excluded.

Certifications

None of 1 known

FCC IDs

Not available

Not available

Other certifications

Not available

Not available

In the box

1 of 1 differ

In the box

Speaker, USB-C to USB-C cable, Shoulder strap3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

EPICBOOM, Quick start guide (printed inside box)1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026Current US product-page package contents. Maker support says USB-C cable included while product page says not included. Cable is omitted pending package clarification.

Links

Not compared

Product page

electronics.sony.com/audio/speakers/all-speakers/p/srsult50-b2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

www.ultimateears.com/en-us/shop/p/epicboom-bluetooth1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026

Spec sheet

www.sony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specifications3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

support.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOM2Maker product pagesupport.logi.com/hc/en-us/articles/15737920299287-Specification-UE-EPICBOOMRead 8 October 2026

Manual

helpguide.sony.net/speaker/7859/v1/en/print.pdf4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

support.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOM3Owner's manualsupport.logi.com/hc/en-us/articles/15737936632983-Getting-Started-UE-EPICBOOMRead 8 October 2026Official EPICBOOM online getting-started manual.

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

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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.

Not available

2years1Maker product pageultimateears.com/en-us/shop/p/epicboom-bluetoothRead 8 October 2026US page embedded specs and compatibility: 2-Year Limited Hardware Warranty.

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