Short answer: the JBL Partybox 710 ranks #4 of 10 large party speakers at $800; the Sony ULT Tower 9 ranks #7 at $800. Close enough in price that the ranking gap is the deciding factor.
What the JBL Partybox 710 gets right: Handle and wheels are convenient. Set against that: Very large and heavy.
On the Sony ULT Tower 9 side: Slightly better sounding than the ULT Tower 10. The tradeoff: Not as deep of bass and loses more bass at high volume even compared to the lower end Partybox speakers.
Buy the JBL Partybox 710 if the ranking matters more than the price. Buy the Sony ULT Tower 9 if the price matters more than the ranking.
Specifications Side By Side
| JBL Partybox 710 | Sony ULT Tower 9 | |
|---|---|---|
| Price | $800 | $800 |
| Ranked | #4 of 10 in Large Party Size Portable Bluetooth Speakers | #7 of 10 in Large Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | No Battery | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| EQ | Yes (3 band) | Yes (10 band) |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | None |
| Microphone Input | Yes | Yes |
| Power Bank | Yes | Yes |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 61.7 lbs / 28 kg | 65.3 lbs / 29.6 kg |
| Built in Microphone | No | No |
| Party Mode | Yes | Yes (Auracast up to 100 speakers) |
| Stereo | Yes | Yes |
| Wifi | No | No |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 15.7" x 35.6" x 17.2" (399 x 905 x 436 mm) | 16.1" x 35.8" x 18.0" (410 x 910 x 456 mm) |
| Drivers | 2x 8" woofer, 2x 2.75" tweeter | 7 drivers: 1x 12.6"x12.6" woofer, 2x 4.7" midrange, 2x 2" tweeter, 2x 1.6" rear tweeter |
| Output Power | 800W | 148W |
The Two Speakers In Full
JBL Partybox 710: $800 Amazon
Pros: Handle and wheels are convenient. Lightshow ability.
Cons: Very large and heavy. No battery. Note, JBL daisychain is not compatible with any other non-JBL speaker and is possibly a fully digital signal.
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Dimensions | 15.7" x 35.6" x 17.2" (399 x 905 x 436 mm) |
| Drivers | 2x 8" woofer, 2x 2.75" tweeter |
| EQ | Yes (3 band) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Microphone Input | Yes |
| Output Power | 800W |
| Party Mode | Yes |
| Power Bank | Yes |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 61.7 lbs / 28 kg |
| Wifi | No |
- Reviews, Comparisons and Sound Samples
- DLX Willington: I’M Floored 😲 JBL Partybox 710 vs 310 Binaural Sound Samples
- GYMCADDY: JBL Partybox 710 Review - Its Your Personal Earthquake Machine
- Jay’s Straight Up Reviews & More: JBL Partybox 710 ☣️ vs Sony SRS XV900 ☢️- Basement Brawl Speaker Comparison. Can XV900 Top the 710❓
- GYMCADDY: JBL Partybox Ultimate Vs Partybox 710 - They’re Both Crazy, But There Is A Clear Winner
- GYMCADDY: Sony ULT Tower 10 Vs JBL Partybox Ultimate & JBL Partybox 710
- Head-to-Head Comparisons
- Links
Sony ULT Tower 9: $800 Amazon
Pros: Slightly better sounding than the ULT Tower 10
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. Not quite as loud as the ULT Tower 10
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Dimensions | 16.1" x 35.8" x 18.0" (410 x 910 x 456 mm) |
| Drivers | 7 drivers: 1x 12.6"x12.6" woofer, 2x 4.7" midrange, 2x 2" tweeter, 2x 1.6" rear tweeter |
| EQ | Yes (10 band) |
| Guitar Input | Yes |
| IP Rating | None |
| Microphone Input | Yes |
| Output Power | 148W |
| Party Mode | Yes (Auracast up to 100 speakers) |
| Power Bank | Yes |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 65.3 lbs / 29.6 kg |
| Wifi | No |
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Sony ULT Tower 9 vs JBL Partybox 720 - indoor listening test
- Oluv Patreon: Sony ULT Tower 9 vs JBL Partybox 720 - power generator test
- GYMCADDY: Sony ULT Tower 9 Vs Sony ULT Tower 10 - Size Doesn’t Matter
- GYMCADDY: Sony ULT Tower 9 Review - Amazing Instrument Separation
- GYMCADDY: JBL Partybox 720 Vs Sony ULT Tower 9
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.