Sony ULT TOWER 9AC Party Speaker

The Sony ULT TOWER 9AC Party Speaker is built for big, room-filling sound with deep bass, strong sound pressure, and flexible party-ready features for music, karaoke, and TV audio. With Sony’s ULT POWER SOUND modes, 360° Party Sound, and an X-Balanced Speaker Unit, this tower speaker is designed to deliver impactful low end and broad sound coverage that reaches across the room. It also adds practical entertainment features like mic and guitar inputs, TV Sound Booster, party lighting, app-based EQ control, and speaker linking for larger setups. For shoppers looking for a powerful Sony party speaker with Bluetooth, optical input, karaoke support, and easy transport, the ULT TOWER 9AC is a strong all-in-one home party audio solution.

What It’s Good At:

• Delivering powerful bass with selectable ULT1 and ULT2 bass boost modes
• Filling large spaces with 360° Party Sound and immersive, high-energy audio
• Creating a full party setup with karaoke and guitar-ready inputs
• Enhancing TV audio through optical input and TV Sound Booster
• Customizing sound with a 10-band EQ in the Sony | Sound Connect app
• Moving more easily than a typical tower speaker thanks to the built-in handle and castors

Sony ULT TOWER 9AC Party Speaker Full Specifications:

• Product name: Sony ULT TOWER 9AC Party Speaker
• Series: ULT POWER SOUND
• Model: ULT TOWER 9AC
• Model number: SRS-ULT900AC
• Internal model: YY7865E
• Speaker configuration: Woofer / Mid (L / R) / Tweeter (L / R) / Rear Tweeter (L / R)
• Number of speakers: Tweeter Unit: 2, Rear Tweeter Unit: 2, Woofer Unit: 1, Midrange Unit: 2
• X-Balanced Speaker Unit: Woofer Unit
• Sound modes: ULT POWER SOUND: 2 (ULT1 / ULT2)
• ULT modes note: 3 total states available — ULT Off, ULT1, ULT2; default setting is ULT2
• Volume steps: 50
• Custom EQ bands: 10
• Sound functions: TV Sound Booster, Sound Field Optimization
• Speaker size, woofer: Approx. 12.6" x 12.6"
• Speaker size, midrange: Approx. 4.72"
• Speaker size, tweeter: Approx. 1.97"
• Speaker size, rear tweeter: Approx. 1.57"
• Dimensions (W x H x D): Approx. 16.14" x 35.83" x 17.95"
• Alternate reference guide dimensions: Approx. 410 mm x 910 mm x 456 mm / 16.2" x 35.9" x 18.0"
• Weight: Approx. 62.83 lb
• Alternate reference guide weight: Approx. 28.5 kg / 62 lb 14 oz
• Bluetooth communication system: Version 5.3
• Bluetooth frequency range: 2.4 GHz
• Bluetooth frequency band: 2.4000 GHz - 2.4835 GHz
• Frequency transmission range: 20 Hz–20,000 Hz (44.1 kHz sampling)
• Compatible Bluetooth profiles: A2DP, AVRCP, SPP
• Supported codecs: SBC, AAC, LDAC
• Speaker add function: Stereo Pair, Party Connect
• Multi-point connection: Can connect simultaneously to 2 Bluetooth devices
• Inputs and outputs: Stereo Mini Jack (IN), USB-A, Optical Digital Input, MIC Input (0.25"), Guitar/MIC Input (0.25")
• Reference guide input detail: USB-A for USB device playback, AUDIO IN jack 3.5 mm, optical input (PCM), MIC1 jack 6.3 mm, MIC2/GUITAR jack 6.3 mm
• USB power port for smartphone: Yes
• DC output via USB-A port: DC 5 V / Max. 1.5 A
• Compatible smartphone app: Sony | Sound Connect
• Direct function controls on unit: Bluetooth, Optical In, TV Sound Booster, Audio In, USB
• Additional on-unit features shown in guide: Connect button, Stereo Pair button, Multi Color, Light control, Echo, Key Control, Guitar control, volume control, play button
• Water protection note: Ports, connector, and jacks are not designed to be water resistant; keep caps firmly closed
• Power supply: AC 120 V, 60 Hz
• AC-only design: Yes
• Power consumption: Approx. 148 W
• Power consumption (off mode): 0.3 W
• Power consumption (standby mode / low power mode): Not Available on support page
• Standby power note from reference guide: With Bluetooth standby on, 2.0 W or less; with Bluetooth standby off, 0.3 W or less
• Transport features: Built-in handle and castors/rollers
• Microphone support: Dual mic-related inputs with microphone stands/holders
• Guitar support: Yes
• TV connection: Optical digital input
• Included in box: Optical cable, AC power cord
• Included items in reference guide: Wireless speaker, AC power cord (mains lead), optical digital cable (optical rectangular plug ↔ optical rectangular plug), documents

Sony ULT TOWER 9AC Party Speaker Q&A:

Does the Sony ULT TOWER 9AC run on battery power?

No. The ULT TOWER 9AC is an AC-powered party speaker that plugs into a wall outlet using the supplied AC power cord.

What kind of bass modes does this speaker have?

It features Sony’s ULT button with ULT1 and ULT2 bass boost modes, plus an Off state, so users can choose the bass intensity that fits the room and the music.

Can this speaker be used for karaoke or live performance fun?

Yes. It includes a dedicated mic input and a second guitar/mic input, making it well suited for karaoke sessions, sing-alongs, and casual guitar performance.

Can the ULT TOWER 9AC connect to a TV?

Yes. It has an optical digital input and supports TV Sound Booster, so it can enhance TV audio for movies, shows, and other entertainment.

Does it support Bluetooth, and which codecs are included?

Yes. It uses Bluetooth 5.3 and supports SBC, AAC, and LDAC codecs, along with A2DP, AVRCP, and SPP profiles.

Can the speaker link with other Sony speakers?

Yes. It supports Stereo Pair and Party Connect for expanded sound setups. Sony notes compatibility details may vary by speaker model and function.

Is the speaker easy to move around?

Yes. The unit includes a built-in handle and castors, making it easier to reposition on flat surfaces than a typical tower speaker.

Is the ULT TOWER 9AC waterproof?

Not fully. The top surface is splashproof, but the ports and jacks are not water resistant, so the caps should remain properly closed and the speaker should not be exposed to heavy moisture.