TV and audio / Wireless speakers
SonyParty wireless speaker
ULT TOWER 9
Released April 2025.2Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 15 October 2026The release says the ULT TOWER 9 is available now at Sony.com, Amazon, Best Buy and other Sony authorized dealers. SoundGuys and TechRadar also date the launch to 9 April 2025. Last checked 21 October 2026.
- Rated audio power
- Not available
- Playback time (claimed)
- 25h
- Dust and water rating
- Not available
- Weight
- 29,600g
53 of 96 fields known.
At a glance
Ports
- AC power
- USB-A
- 3.5 mm audio
- 2 6.35 mm audio
- Optical (TOSLINK)
General
- Model numbers
- SRS-ULT900, YY7864E1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide cover states Model YY7864E. The parts section and contents name the speaker SRS-ULT900.
- Predecessor
- Not available
- Successor
- Not available
- Launch price (EU)
- Not available
- Markets
- US, GB, JP4Press articletechradar.com/audio/wireless-bluetooth-speakers/sony-adds-three-bluetooth-speakers-to-its-bass-hungry-ult-range-meet-tower-9-field-5-and-field-3Read 15 October 2026Launch article of 2025-04-09 names the powered Tower 9 at 899.99 USD and 850 GBP. The US market comes from the Sony press release and Japan from the NTT-X listing. No euro price is published for the battery model in the sources read, so launch_price_eur is left out.5Retailer pagenttxstore.jp/_II_SN16806247Read 15 October 2026Japanese listing for SRS-ULT900 gives release date 2025-05-16 and describes a splash-resistant top panel.
Audio
- Audio channels
- Not available
- Audio drivers
Driver type Count Diameter (mm) Width (mm) Height (mm) Woofer 1 Not available 320 320 Midrange 2 120 Not available Not available Front tweeter 2 50 Not available Not available Rear tweeter 2 40 Not available Not available - Passive radiators
- Not available
- Rated audio power
- Not available
- Rated audio power on mains
- Not available
- Peak audio power
- Not available
- Frequency response lower limit (claimed)
- Not available
- Frequency response upper limit (claimed)
- Not available
- Signal-to-noise ratio (claimed)
- Not available
- Equalizer bands
- 103Retailer pageabt.com/Sony-ULT-POWER-SOUND-Series-ULT-TOWER-9-Party-Speaker-Bluetooth-in-Black-SRSULT900/p/221687.htmlRead 15 October 2026Copy of the Sony page says 10-Band Equalizer controllable through the Sony | Sound Connect app. The UK EE spec table lists Custom EQ band: 10. The help guide gives no band count.6Retailer pageee.co.uk/help/tech/device/Sony/SRS-ULT900WirelessSpeakerRead 15 October 2026UK spec table reproducing Sony data lists Custom EQ band: 10, Volume Step: 50, and the same driver sizes as the help guide. It lists water protection as Splashproof with no IP rating. It lists Bluetooth 5.3, SBC, AAC and LDAC, 153 W power consumption, 410 x 910 x 456 mm and 29.6 kg, which match the guide.
- Automatic sound adjustment
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Sound Field Optimization uses microphone sensing to detect noise around the speaker and adjust the sound. It is on at purchase and is turned off in Stereo Pair or Party Connect.
- Sound modes
- ULT1, ULT2, TV Sound Booster, STAMINA1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026ULT button cycles ULT1 (deep bass), ULT2 (sense of power) and off. TV Sound Booster is a named mode for optical TV audio. STAMINA is a power option in the app that turns off lighting and sound effects including ULT POWER SOUND to save battery. No STAMINA playtime is published, so battery_life_boost_h is left out.
- Wireless stereo pairing
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: Stereo Pair needs 2 ULT TOWER 9 speakers. One plays left and the other right over Bluetooth.
- Speaker link protocols
- Party Connect, Stereo Pair1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide names the Stereo Pair and Party Connect functions.
Connectivity
- Bluetooth audio playback
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026
- Bluetooth version
- 5.31Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Supported BLUETOOTH standard version 5.3.
- Bluetooth codecs
- SBC, AAC, LDAC1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: SBC, AAC and LDAC for music playback over an A2DP connection. Party Connect forces SBC.
- Bluetooth profiles
- A2DP, AVRCP1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide lists A2DP and AVRCP. The UK EE spec table also lists SPP, which the guide does not, so SPP is left out.
- Bluetooth LE Audio
- Not available
- Auracast
- Not available
- Multipoint source devices
- 21Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Up to 2 Bluetooth devices at once. The speaker remembers up to 8 paired devices but plays from one at a time.
- Bluetooth range (claimed)
- 30m1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Maximum communication range about 30 m (98.4 ft) in line of sight. It shortens with obstacles and 2.4 GHz interference.
- Wi-Fi standards
- Not available
- Network audio protocols
- Not available
- USB audio input
- Not available
- USB audio file formats
- MP3, WMA, WAV1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Supported audio file formats are MP3, WMA and WAV.
- Ports
Connector Count Role AC power 1 AC power input USB-A 1 USB storage playback and charging output for other devices 3.5 mm audio 1 Audio input 6.35 mm audio 1 MIC1 microphone input 6.35 mm audio 1 MIC2 and GUITAR input Optical (TOSLINK) 1 Optical digital audio input (PCM)
Controls and software
- Voice assistants
- Not available
- Controls
- Power, ULT sound mode, Bluetooth pairing, Optical input select, TV Sound Booster, Audio input select, USB input select, Party Connect, Stereo Pair, Lighting on and off, Lighting color selectors, Multi color lighting, Volume up and down, Play, pause and skip, Key control, Echo, Guitar mode, Microphone level knob, Microphone and guitar level knob, Battery level and Battery Care1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Parts list: power button, ULT, CHARGE indicator, direct function keys (Bluetooth, OPTICAL IN, TV SOUND BOOSTER, AUDIO IN, USB), MULTI COLOR, CONNECT, STEREO PAIR, lighting color selectors, KEY CONTROL flat and sharp, ECHO, LIGHT, volume minus and plus, play, MIC level knob, MIC and GUITAR level knob, GUITAR button and the BATTERY and BATTERY CARE button behind the rear cap.
- Companion app
- Sony | Sound Connect1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: Sony | Sound Connect app for updates, sound settings, equalizer, lighting, TV Sound Booster and party functions.
- App platforms
- iOS, Android1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: download from the Google Play store or the App Store.
- User firmware updates
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide has a section on updating the speaker software through the Sony | Sound Connect app.
- Built-in lighting
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: the speaker lights up with the music. Lighting is on at purchase.
- Lighting modes
- Multi color, Red, Yellow, Green, Blue, Purple1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: five lighting color selectors (red, yellow, green, blue, purple) and MULTI COLOR for the default multicolor mode. The app has a Lighting Mode function and Party Light functions that are not listed here.
Smart home
We could not find any of these 3 fields. Show them
- Matter controller
- Not available
- Thread border router
- Not available
- Zigbee hub
- Not available
Battery and charging
- Built-in battery
- Yes1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: the speaker runs on AC power or on the built-in lithium-ion battery.
- Playback with battery extension (claimed)
- Not available
- Battery energy
- Not available
- Battery capacity
- Not available
- Nominal battery voltage
- Not available
- Battery chemistry
- Lithium-ion1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide specifications and power section: built-in lithium-ion battery. Capacity in Wh or mAh is not published.
- User-replaceable battery
- Not available
- Quick charge duration
- 10min1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide: 10 minutes of charging provides about 180 minutes of music playback.
- Playback after quick charge
- 3h1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026180 minutes is stored as 3 hours. Conditions are volume level 18, ULT1/2 on and lighting off.
- Charging input rating
- AC 120 V, 60 Hz in North America. AC 120 V to 240 V, 50/60 Hz in other regions1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Specifications, Power: AC 120 V, 60 Hz for North America. AC 120 V to 240 V, 50/60 Hz for other countries and regions. Power consumption is about 153 W and is not a charging figure. The battery charges only from the AC input jack.
- Max charging input
- Not available
- USB Power Delivery charging
- Not available
- Max power-bank output
- 7.5W1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Specifications, DC OUT: Type A USB port, DC 5 V and MAX 1.5 A. 5 V x 1.5 A is 7.5 W.
- Wireless charging
- Not available
Durability
- Dust and water rating
- Not available
- Floats
- Not available
- Drop resistance
- Not available
- Drop test height
- Not available
Measured
We could not find any of these 6 fields. Show them
- Playback time (measured)
- Not available
- Max sound pressure (measured)
- Not available
- Low-frequency extension (measured)
- Not available
- High-frequency extension (measured)
- Not available
- Audio latency (measured)
- Not available
- Full charge time (measured)
- Not available
Dimensions and weight
Front and side, drawn to scale.
- Dimensions
- Width410Height910Depth456mm(16.1 × 35.8 × 18 in)1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Specifications: about 410 mm x 910 mm x 456 mm (W x H x D) including projecting parts and controls.
- Body materials
- Plastic (partly recycled)3Retailer pageabt.com/Sony-ULT-POWER-SOUND-Series-ULT-TOWER-9-Party-Speaker-Bluetooth-in-Black-SRSULT900/p/221687.htmlRead 15 October 2026Copy of the Sony page says recycled plastic originally developed for Sony is partially used for the body. Other body materials are not published.
Certifications
We could not find any of these 2 fields. Show them
- FCC IDs
- Not available
- Other certifications
- Not available
In the box
- In the box
- ULT TOWER 9 speaker, AC power cord, Optical digital cable, Reference Guide1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Guide names the supplied AC power cord, the supplied optical digital cable and a Reference Guide included with the product.
Links
- Product page
- Not available
- Spec sheet
- Not available
- Manual
- helpguide.sony.net/speaker/7864/v1/en/print.pdf1Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdfRead 15 October 2026Sony English help guide for ULT TOWER 9, full print PDF read. Copyright 2025 Sony Corporation, 104 pages.
- EPREL registration number
- Not available
Warranty
- Manufacturer warranty (source market)
- 1year3Retailer pageabt.com/Sony-ULT-POWER-SOUND-Series-ULT-TOWER-9-Party-Speaker-Bluetooth-in-Black-SRSULT900/p/221687.htmlRead 15 October 2026US listing gives a 1 year limited parts warranty and a 1 year limited labor warranty. The UK EE spec table gives 24 months. Other markets are not covered.
Compare with
Pick a wireless speaker to see both side by side. Differences are marked yellow.
Sources
We read 7 sources for this wireless speaker. The numbers match the markers in the sheet.
- Owner's manualhelpguide.sony.net/speaker/7864/v1/en/print.pdf
- Retailer pagenttxstore.jp/_II_SN16806247
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