Sony ULT TOWER 9 AC Black Partybox

Sony SRSULT900AC: Ultimate Party Speaker with Adjustable Bass

The Sony SRSULT900AC, also called the ULT TOWER 9AC, was crafted for those seeking deep bass, high sound pressure, and dynamic lighting at memorable parties or home gatherings. With hi-fi effect capabilities, this speaker uses a sophisticated array of drivers to deliver enveloping, balanced 360° Party Sound. Its large X-Balanced woofer and flexible input options make it a solid pick for musicians, karaoke fans, and anyone serious about home entertainment. This model brings concert-level power and creative control in a mobile package.

Standout Features: Two-Stage Bass, Lighting & Versatile Inputs

Offering two bass profiles through the ULT button, users can select ULT1 for deep, resonant lows or ULT2 for punchy, energetic bass—perfect for any celebration. A built-in 360° Party Light system pulses with your music, while a splashproof top and sturdy wheels encourage use at both indoor and outdoor events. With dual mic and guitar ports plus an optical TV input, the SRSULT900AC separates itself from ordinary speakers.

Bass Depth & Speaker Design — For Immersive Sound

Room-filling bass is delivered through advanced drivers and the X-Balanced woofer. With selectable modes, you can shift between heart-pounding beats and balanced audio depending on your mood or environment.

• Woofer Size: 320 mm x 320 mm — Deep, powerful bass enhances dance music and movies alike.
• Four tweeters (two front, two rear) and two mid-range speakers work together to provide crisp highs and clear vocals throughout the listening area.
• ULT1/ULT2 Bass Modes: Selectable via ULT button — Adjust bass for both indoor and outdoor gatherings.

Party Control, Lighting & Connectivity

Entertainment goes beyond sound with features made for group fun and easy system integration. Party Connect allows up to 100 compatible Sony speakers to synchronize for a true festival vibe. The Sound Connect app unlocks custom EQ and lighting adjustments, while karaoke features such as echo and key control are included for creative performances.

• Connectivity: Bluetoooth, Optical, USB, Audio in — Suits DJs, musicians, and anyone wanting flexible connection options.
• Karaoke and guitar inputs let users set up duets, singalongs, or even live band sessions with ease.
• Splashproof Top Panel: Designed for spill-prone environments — Keeps your event going worry-free.

Portability & Durability — Effortless Party Mobility

Transport is simple, thanks to sturdy wheels and a durable handle. The splashproof panel is ideal for lively gatherings, and the partially recycled plastic body demonstrates Sony's environmental focus.

• Portability: Wheels + handle — Move the speaker effortlessly from room to garden.
• The enclosure uses partial recycled plastic for improved sustainability.
• Lighting: 360° synchronized multi-color — Customizable via app for any party mood.

Who Is It For: DJs, Karaoke Fans & Home Entertainers

Party planners, event DJs, karaoke lovers, and home entertainment enthusiasts will appreciate the immersive sound and vibrant lighting. Musicians can benefit from the live input options, while tech fans will enjoy advanced Bluetooth, multi-device pairing, and in-app customization. Use this speaker for large house parties or as a creative centerpiece for music and events—its capabilities suit passionate music lovers and advanced users alike.

Sony ULT TOWER 9AC: A New Standard for Party Audio

Part of the Sony ULT POWER SOUND series, this model exemplifies innovation in portable hi-fi systems, with the X-Balanced Speaker Unit and Party Connect setting a new benchmark for versatile, powerful audio.