Short answer: the Partybox 710, and it isn’t close. It ranks #6 out of 12 large party speakers, the ULT Tower 9 ranks #9, and the Partybox 710 costs $49 less.
The Sony doesn’t have a real answer for the price and rank gap. The ULT Tower 9’s own notes admit its bass isn’t as deep as others in the class and drops off a lot at higher volumes, even compared to lower-end Partybox models, and it’s noted as not quite as loud as its own sibling, the ULT Tower 10. The Partybox 710 runs 800W through two 8” woofers and two 2.75” tweeters, well above the ULT Tower 9’s 148W through a single 12.6” woofer.
Water resistance is the other clear gap. The Partybox 710 is IPX4 rated for splash resistance, while the ULT Tower 9 has no water resistance rating at all. The ULT Tower 9 does answer with more refined features: a 10-band EQ versus 3 bands on the Partybox 710, AAC and LDAC codec support versus SBC only, and a 25-hour internal battery, something the Partybox 710 doesn’t have since it must stay plugged into AC power.
Everything else matches: both include a handle-free karaoke mic input with echo effect, a guitar input, USB-A power bank output, and party mode support for linking multiple speakers.
Buy the JBL Partybox 710 for the higher rank, the lower price, and the only water resistance rating between the two.
Buy the Sony ULT Tower 9 only if the 10-band EQ, better Bluetooth codecs, or the internal battery outweigh the sound quality and price gap for you.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox 710 | Sony ULT Tower 9 | |
|---|---|---|
| Price | $699.00 | $748.00 |
| Ranked | #6 of 12 in Large Party Size Portable Bluetooth Speakers | #9 of 12 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 (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 |
| 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 (PartyBoost) | Yes (Auracast up to 100 speakers) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Wi-Fi | 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" (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 |
| Amplifier Power | 800W | 148W |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
Related Speaker Comparisons
More top alternatives to JBL Partybox 710:
- JBL Partybox 710 vs Sony ULT Tower Max
- JBL Partybox 710 vs JBL Partybox Ultimate
- JBL Partybox 1000 vs JBL Partybox 710
- Teufel Rockster 2 vs JBL Partybox 710
- JBL Partybox 710 vs JBL Partybox 720
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 710: $699.00 Amazon eBay
Pros: At 28 kg, JBL Partybox 710 combines 2x 8” woofer, 2x 2.75” tweeter with Bluetooth and aux. Ipx4 protection and stereo playback make its feature set practical for its intended room or portable use.
Cons: Careful placement is still important for balanced bass.
Full JBL Partybox 710 review and specifications →
| Amplifier Power | 800W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | No Battery |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | 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 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (PartyBoost) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 61.7 lbs (28 kg) |
| Wheels | Yes |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- DLX Willington: I’M Floored 😲 JBL Partybox 710 vs 310 Binaural Sound Samples More from DLXWillington →
- GYMCADDY: JBL Partybox 710 Review - Its Your Personal Earthquake Machine More from GYMCADDY →
- Jay’s Straight Up Reviews & More: JBL Partybox 710 ☣️ vs Sony SRS XV900 ☢️- Basement Brawl Speaker Comparison. Can XV900 Top the 710❓ More from JaysStraightUpReviews →
- 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
- JBL Partybox 710 vs JBL Partybox 520
- JBL Partybox 710 vs JBL Partybox 720
- JBL Partybox 710 vs Teufel Rockster
- JBL Partybox 710 vs Teufel Rockster 2
- JBL Partybox 710 vs JBL Partybox 1000
- JBL Partybox 710 vs JBL Partybox Ultimate
- JBL Partybox 710 vs Sony ULT Tower 10
- JBL Partybox 710 vs Sony SRS-XV900
- See all 13 comparisons
Sony ULT Tower 9: $748.00 Amazon eBay
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
Full Sony ULT Tower 9 review and specifications →
| Amplifier Power | 148W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1" x 35.8" x 18" (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 |
| 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 | 65.3 lbs (29.6 kg) |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Sony ULT Tower 9 vs JBL Partybox 720 - indoor listening test More from Oluv’Sone →
- 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 More from GYMCADDY →
- GYMCADDY: Sony ULT Tower 9 Review - Amazing Instrument Separation
- GYMCADDY: JBL Partybox 720 Vs Sony ULT Tower 9
- Joy & Oluv’Sone 3DAudio & Music: Sony ULT9 vs JBL Partybox 720 - the king of battery powered party speakers
- Head-to-Head Comparisons
- Sony ULT Tower 9 vs Sony ULT Tower 10
- Sony ULT Tower 9 vs Teufel Rockster
- Sony ULT Tower 9 vs JBL Partybox 520
- Sony ULT Tower 9 vs Sony SRS-XV900
- Sony ULT Tower 9 vs Marshall Bromley 750
- Sony ULT Tower 9 vs JBL Partybox 720
- Sony ULT Tower 9 vs Teufel Rockster 2
- Sony ULT Tower 9 vs JBL Partybox 1000
- See all 14 comparisons