Short answer: the JBL Partybox Ultimate. It ranks #3 of 13 large party speakers, while the Sony ULT Tower 10 sits near the bottom of the same list at #11, and the gap isn’t close: 8 places, despite the ULT Tower 10 costing $905.61 less.
Bass is the deciding factor, and it isn’t close. Our notes describe the Partybox Ultimate as having the absolute deepest bass of any Bluetooth speaker, backed by dual 9 inch subwoofers alongside its midrange and tweeter drivers. The ULT Tower 10 is the opposite story: not as deep of bass, and it loses more bass at higher volume than even lower-end Partybox models. That tradeoff shows up despite the ULT Tower 10 actually playing louder overall thanks to its 139W output and 7-driver array.
The Partybox Ultimate also wins on durability and convenience. It carries an IPX4 splash rating that the ULT Tower 10 lacks entirely, and its built-in handle and wheels make it easier to move despite weighing more (39 kg versus 63.9 lbs (29 kg)).
What the ULT Tower 10 offers instead: it comes with an included wireless microphone, supports the LDAC codec for higher-quality wired-source streaming, and undercuts the Partybox Ultimate’s price by $905.61.
Buy the JBL Partybox Ultimate for the deepest, most consistent bass at any volume and better durability, if the price is within reach.
Buy the Sony ULT Tower 10 only if raw loudness or the included wireless microphone matters more to you than bass depth, and you’re fine with no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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
| JBL Partybox Ultimate | Sony ULT Tower 10 | |
|---|---|---|
| Price | $1,899.95 | $994.34 |
| Ranked | #3 of 13 in Large Party Size Portable Bluetooth Speakers | #11 of 13 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | No Battery |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| EQ | Yes (3 band) | Yes (7 band) |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord | AC Power cord |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 86 lbs (39 kg) | 63.9 lbs (29 kg) |
| Wi-Fi | Yes | No |
| Built-in Microphone | No | No |
| Party Mode | Yes (Auracast) | Yes (Auracast up to 100 speakers) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 17.9” x 41.3” x 17.3” (455 x 1049 x 440 mm) | 16.5” x 43.5” x 16.9” (418 x 1106 x 428 mm) |
| Drivers | 2x 9” subwoofer, 2x 4.5” midrange, 2x 2.75” tweeter | 7 drivers: 1x 12.6”x12.6” woofer, 2x 3.1” midrange, 2x 1.6” tweeter, 2x 1.6” rear tweeter |
| Amplifier Power | 1100W | 139W |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Strap | No | No |
| Removable Battery | - | No |
| Wireless Microphones | - | Yes Included |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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