Short answer: the JBL Partybox Ultimate. It ranks #2 of 12 large party speakers, while the Sony ULT Tower 10 sits near the bottom of the same list at #10, and the gap isn’t close: 8 places, despite the ULT Tower 10 costing $1000.96 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 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 $1000.96.
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.
Specifications Side By Side
| JBL Partybox Ultimate | Sony ULT Tower 10 | |
|---|---|---|
| Price | $1,899.95 | $898.99 |
| Ranked | #2 of 12 in Large Party Size Portable Bluetooth Speakers | #10 of 12 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | No Battery |
| 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 | - |
| Removable Battery | - | No |
| Wireless Microphones | - | Yes Included |
Related Speaker Comparisons
How JBL Partybox Ultimate compares with other leading options:
- Sony ULT Tower Max vs JBL Partybox Ultimate
- JBL Partybox 1000 vs JBL Partybox Ultimate
- JBL Partybox Ultimate vs Teufel Rockster 2
- JBL Partybox 720 vs JBL Partybox Ultimate
- JBL Partybox 710 vs JBL Partybox Ultimate
Prices on this page were last checked September 23, 2026 at 11:24 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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The Two Speakers In Full
JBL Partybox Ultimate: $1,899.95 Amazon B&H Photo Video eBay
Pros: A true large-venue party speaker: its 1,100W system, dual 9-inch woofers and six-driver array produce exceptionally deep, authoritative bass and very high clean output. Independent reviews praise its unusually clear, articulate sound at extreme levels. Wi-Fi streaming, app EQ, inputs for two mics/guitar, USB playback, Auracast, a polished light show and wheels make it unusually complete for karaoke and DJ-style use.
Cons: At 39kg and more than a metre tall, this is not casually portable despite the wheels. It needs AC power, has no battery and only IPX4 splash resistance. Reviews also note that its bass-heavy presentation can obscure fine detail and overwhelm a small room; its size and cost only make sense for very large spaces or frequent events.
Full JBL Partybox Ultimate review and specifications →
| Amplifier Power | 1100W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 17.9" x 41.3" x 17.3" (455 x 1049 x 440 mm) |
| Drivers | 2x 9" subwoofer, 2x 4.5" midrange, 2x 2.75" tweeter |
| EQ | Yes (3 band) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 86 lbs (39 kg) |
| Wheels | Yes |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: JBL Partybox Ultimate Vs SOUNDBOKS 4 & Sony XV900 - Is It Worth It? More from GYMCADDY →
- GYMCADDY: JBL Partybox Ultimate Vs Partybox 710 - They’re Both Crazy, But There Is A Clear Winner
- Flossy Carter: JBL PartyBox Ultimate VS JBL PartyBox 1000 - Which Speaker is The BEST? More from FlossyCarter →
- GYMCADDY: JBL Partybox 720 Vs JBL Partybox Ultimate
- GYMCADDY: Sony ULT Tower 10 Vs JBL Partybox Ultimate & JBL Partybox 710
- M1MTechChannel: Vorsicht LAUT ⚠️ | Teufel Rockster 2 vs JBL Partybox 720 / Ultimate More from M1MTechChannel →
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026
- Head-to-Head Comparisons
- JBL Partybox Ultimate vs JBL Partybox 1000
- JBL Partybox Ultimate vs Sony ULT Tower Max
- JBL Partybox Ultimate vs Teufel Rockster 2
- JBL Partybox Ultimate vs JBL Partybox 720
- JBL Partybox Ultimate vs JBL Partybox 710
- JBL Partybox Ultimate vs JBL Partybox 520
- JBL Partybox Ultimate vs Teufel Rockster
- JBL Partybox Ultimate vs Sony ULT Tower 9
- See all 15 comparisons
Sony ULT Tower 10: $898.99 Amazon eBay
Pros: Louder than the Partybox Ultimate. Includes a wireless microphone.
Cons: Not as deep of bass and loses more bass at high volume even compared to the lower end Partybox speakers. Bass drops off a lot at higher volumes.
Full Sony ULT Tower 10 review and specifications →
| Amplifier Power | 139W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.5" x 43.5" x 16.9" (418 x 1106 x 428 mm) |
| Drivers | 7 drivers: 1x 12.6"x12.6" woofer, 2x 3.1" midrange, 2x 1.6" tweeter, 2x 1.6" rear tweeter |
| EQ | Yes (7 band) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 63.9 lbs (29 kg) |
| Wi-Fi | No |
| Wireless Microphones | Yes Included |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Tower 10 vs Sony ULT Tower 9
- Sony ULT Tower 10 vs Sony SRS-XV900
- Sony ULT Tower 10 vs Marshall Bromley 750
- Sony ULT Tower 10 vs Teufel Rockster
- Sony ULT Tower 10 vs JBL Partybox 520
- Sony ULT Tower 10 vs JBL Partybox 710
- Sony ULT Tower 10 vs JBL Partybox 720
- Sony ULT Tower 10 vs Teufel Rockster 2
- See all 14 comparisons