These sit in different size classes, so this is not a straight ranking comparison. The JBL Partybox 720 ranks #6 of 13 large party speakers by sound quality at $1,099.95; the Sony ULT Tower 7 ranks #1 of 53 party speakers by sound quality at $648.
Two sizes, one decision about how big your party is. The PartyBox 720 is a large party speaker at 68.3 lbs (31 kg) and 94 cm tall with two 9 inch woofers and 800W. The ULT Tower 7 is a party speaker at 50.3 lbs (22.8 kg) with 420W. Each is rated within its own class.
The 720 is built for scale. Testing confirms very high output and strong bass that can cover a backyard or large event. It runs on two removable batteries with a claimed 15 hours, and has karaoke and guitar inputs, USB-C playback, Auracast and a light show. Its front-facing layout sounds uneven to people at the sides or behind, and the default tuning is dark and bass heavy, so plan on using the app EQ.
The ULT Tower 7 spreads sound in 360 degrees with rear tweeters, and claims 30 hours of battery with the lights off. Its punchy, clean ULT1 bass mode and unusually complete inputs, including balanced XLR, RCA and a mic input, make it a flexible DJ or karaoke speaker. It supports LDAC and AAC. Its battery is not removable, and its Auracast does not link with Sony’s older Party Connect speakers.
Both are IPX4, so both handle splashes but not rain.
Buy the JBL Partybox 720 ($1,099.95) for a large party speaker; the Sony ULT Tower 7 ($648) suits a party speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 AM 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 720 | Sony ULT Tower 7 | |
|---|---|---|
| Price | $1,099.95 | $648.00 |
| Ranked | #6 of 13 in Large Party Size Portable Bluetooth Speakers | #1 of 53 in Party Size Portable Bluetooth Speakers |
| App | Yes | Yes (Sony Sound Connect) |
| Aux Input | Yes | RCA input |
| Battery Life | 15 hours (Manufacturer specified) | 30 hours (lights off; manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| EQ | Yes (5 band) | Yes (10 band; ULT1 / ULT2 / Flat) |
| Guitar Input | Yes | No |
| IP Rating | IPX4 | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Power Bank | Yes (USB-C) | Yes (USB charging) |
| Power Input | AC Power cord | AC power cord |
| Removable Battery | Yes | No |
| TWS | Yes | Yes (Stereo Pair) |
| USB Playback | Yes | Yes (USB-A) |
| Weight | 68.3 lbs (31 kg) | 50.3 lbs (22.8 kg) |
| Built-in Microphone | No | No |
| Stereo | Yes | Yes |
| Omnidirectional | No | Yes (360 degree Party Sound) |
| Wi-Fi | No | No |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 16.4” x 37.1” x 16” (416 x 942 x 406 mm) | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) |
| Drivers | 2x 9” woofer, 2x 1.25” dome tweeter | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter |
| Amplifier Power | 800W | 420W |
| Digital Aux Input | No | Yes (USB-C) |
| Lights | Yes | Yes |
| Wheels | Yes | Yes |
| Strap | No | No |
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