Short answer: the Tower 9 for sound, the Tower 10 if you need the microphone. These rank #10 and #11 out of 13 large-party speakers, at $898 and $994.34 respectively.
The Tower 9 is described in our own notes as slightly better sounding. Both share the exact same core weakness: bass that drops off substantially at higher volume, to the point of trailing even some of JBL’s lower-end Partybox models. See the Partybox 720 vs Tower 9 comparison for how badly that costs Sony against the competition. Neither Tower fixes it; the 9 is simply the cleaner-sounding of the two Sony siblings.
The Tower 10’s case is entirely about two features: it’s louder than the JBL Partybox Ultimate, and it includes a wireless microphone the Tower 9 doesn’t have. If karaoke or announcements are part of why you’re buying a speaker this size, that’s a real, specific reason to pick it over its sibling. See karaoke setups for how to build that around it properly.
Both are stationary party equipment that need mains power, so portability isn’t a differentiator between them the way it might be one size class down.
Buy the Tower 9 for the better default sound. Buy the Tower 10 if the wireless microphone or the extra headroom over the Partybox Ultimate matters more to you than the sound quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A loud mains powered party tower with good sound and a wireless microphone included for karaoke.
A battery powered party tower with good sound, a long battery, karaoke inputs, and a detailed app EQ.
Prices on this page were last checked November 5, 2026 at 10:30 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Sony ULT Tower 10 | Sony ULT Tower 9 | |
|---|---|---|
| Price | $994.34 | $898.00 |
| Ranked | #11 of 13 in Large Party Size Portable Bluetooth Speakers | #10 of 13 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | 25 hours (Manufacturer specified) |
| EQ | Yes (7 band) | Yes (10 band) |
| Guitar Input | Yes | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (Auracast up to 100 speakers) | Yes (Auracast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 63.9 lbs (29 kg) | 65.3 lbs (29.6 kg) |
| Wireless Microphones | Yes Included | - |
| Built-in Microphone | No | No |
| IP Rating | None | None |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Wi-Fi | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 | 5.3 |
| Dimensions | 16.5” x 43.5” x 16.9” (418 x 1106 x 428 mm) | 16.1” x 35.8” x 18” (410 x 910 x 456 mm) |
| Drivers | 7 drivers: 1x 12.6”x12.6” woofer, 2x 3.1” midrange, 2x 1.6” tweeter, 2x 1.6” rear tweeter | 7 drivers: 1x 12.6”x12.6” woofer, 2x 4.7” midrange, 2x 2” tweeter, 2x 1.6” rear tweeter |
| Amplifier Power | 139W | 148W |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Strap | No | No |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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