Short answer: the Sony ULT Tower 7 for the more flexible event layout. It specifies 420W, a claimed 30-hour battery, wheels, 10-band EQ and RCA/XLR/USB-C, and its rear tweeters, XLR input and Sound Connect controls give it the current feature set. The Tower 9’s 25-hour battery claim and older driver arrangement do not settle the decision on their own, so compare battery, weight and connections.
The Tower 7 is the newer 360-degree design; the Tower 9 is the older larger Sony. Tower 7 specifies 420W, a claimed 30-hour battery, wheels, 10-band EQ and RCA/XLR/USB-C. Tower 9 has a 25-hour battery claim and a different older-generation driver arrangement.
Choose the Tower 7 for current inputs and all-around coverage: Its rear tweeters, XLR input and Sound Connect controls give it the more flexible event-speaker layout.
Choose the Tower 9 only when its older feature mix is the priority: Its larger cabinet does not by itself settle the decision; compare battery, weight and connection differences below.
Buy the Sony ULT Tower 7 at $548 for a party speaker, or the Sony ULT Tower 9 at $798 for a large party speaker instead.
If water resistance matters to you, the Sony ULT Tower 7 at IPX4 (splashing) holds up far better than the Sony ULT Tower 9 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
A big, loud party speaker on wheels with punchy bass, a 30 hour battery, 360 degree sound and inputs for mics and instruments.
A battery powered party tower with good sound, a long battery, karaoke inputs, and a detailed app EQ.
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Specifications Side By Side
| Sony ULT Tower 7 | Sony ULT Tower 9 | |
|---|---|---|
| Price | $548.00 | $798.00 |
| Ranked | #1 of 50 in Party Size Portable Bluetooth Speakers | #10 of 13 in Large Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes |
| Aux Input | RCA input | Yes |
| Battery Life | 30 hours (lights off; manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.3 |
| Built-in Microphone | No | No |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) | 16.1” x 35.8” x 18” (410 x 910 x 456 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 7 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” tweeter, 2x 1.6” rear tweeter |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes (10 band) |
| Guitar Input | No | Yes |
| IP Rating | IPX4 | None |
| Microphone Input | Yes | Yes (Karaoke mode with echo effect) |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Amplifier Power | 420W | 148W |
| Party Mode | Yes (Auracast) | Yes (Auracast up to 100 speakers) |
| Power Bank | Yes (USB charging) | Yes (USB-A, 5V/1.5A) |
| Power Input | AC power cord | AC Power cord |
| Removable Battery | No | No |
| Stereo | Yes | Yes |
| TWS | Yes (Stereo Pair) | Yes |
| USB Playback | Yes (USB-A) | Yes |
| Weight | 50.3 lbs (22.8 kg) | 65.3 lbs (29.6 kg) |
| Wi-Fi | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Strap | No | No |
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