Sony ULT Tower 9

Sony ULT Tower 9: Overview

The Sony ULT Tower 9 (model SRS-ULT900) is a premium Bluetooth party speaker from Sony’s ULT POWER SOUND series, released in April 2025. Designed for large gatherings, it delivers room-filling 360° sound with emphasis on deep, powerful bass, making it ideal for backyard parties, karaoke sessions, or home concerts. It’s available in two variants:

• SRS-ULT900: Battery-powered model with up to 25 hours of playback (at moderate volume with ULT mode off).
• SRS-ULT900AC: AC-powered version (no built-in battery) for stationary setups.

Key Specifications

Standout Features

• ULT Bass Boost: Press the dedicated ULT button for two modes—ULT1 (deeper low-end bass) or ULT2 (maximum thump). This enhances the “front-row concert” feel but can overpower mids in nuanced tracks; use the app’s EQ to balance.
• 360° Party Sound & Lights: Omnidirectional audio fills any space, paired with customizable LED lights that sync to the beat (e.g., strobe, pulse modes).
• Karaoke & Live Mode: Plug in wired mics or guitars (compatible with Sony’s wireless ULT Mic, sold separately for $150). Includes echo effects and key changes via the app.
• Portability: Built-in wheels and a handle make it easier to move than its size suggests, though it’s still a beast to transport.
• High-Res Audio: Supports LDAC codec for hi-res streaming over Bluetooth.

Pros and Cons (Based on Reviews)

• Pros: Immense volume and bass that “shakes the room” without distortion at high levels; versatile for parties with lights and karaoke; excellent battery in the wireless model; app adds depth for sound tweaking.
• Cons: No included microphone or remote (app can be clunky with fragmented menus); heavy and bulky; bass-heavy ULT2 mode muddies details in non-electronic music; no weatherproofing for true outdoor use.