Short answer: the Sony ULT Tower 7 on measured sound quality, the JBL Partybox 330 on price. The Sony ULT Tower 7 ranks #1 of 53 party speakers at $649.99. The JBL Partybox 330 ranks #2 at $599.95, $50.04 cheaper.
Both target substantial battery-powered parties, but they take different approaches. The Tower 7 uses three sound modes, 10-band EQ and a seven-driver 360-degree layout, while the PartyBox 330 focuses on JBL’s PartyBox platform and a lighter wheeled cabinet.
The Tower 7 advantage: A claimed 30-hour battery, 420W system, XLR/RCA/USB-C connectivity and room-filling rear tweeters give it more flexibility for long events and wired sources.
The PartyBox 330 advantage: Its lower weight and wheeled form factor make it the simpler option for frequent transport. Compare the input and battery rows below before choosing.
Buy the Sony ULT Tower 7 when sound quality outweighs the price for you, and the JBL Partybox 330 when the price outweighs sound quality instead.
Battery life favors the Sony ULT Tower 7: rated for 30 hours against 18 hours for the JBL Partybox 330.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Tower 7 | JBL Partybox 330 | |
|---|---|---|
| Price | $649.99 | $599.95 |
| Ranked | #1 of 53 in Party Size Portable Bluetooth Speakers | #2 of 53 in Party Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes |
| Aux Input | RCA input | Yes |
| Battery Life | 30 hours (lights off; manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 6.0 |
| Built in Microphone | No | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 13.7" x 16.6" x 28" (348 x 422 x 711 mm) | - |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 2x 6.5" (165mm) woofers + 2x 1" (25mm) PEN dome tweeters |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | Yes (Smart EQ mode) |
| Guitar Input | No | Yes |
| IP Rating | IPX4 | IPX4 |
| Microphone Input | Yes | Yes (Karaoke mode with echo effect) |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Output Power | 420W | 280W |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Power Bank | Yes (USB charging) | Yes (USB-C, 5V/1A) |
| Power Input | AC power cord | AC Power cord |
| Removable Battery | No | Yes |
| Stereo | Yes | Partially |
| TWS | Yes (Stereo Pair) | Yes |
| USB Playback | Yes (USB-A) | Yes |
| Weight | 50.3 lbs / 22.8 kg | 37.7 lbs / 17.1 kg |
| Wifi | No | - |
| Charging Time | - | 3 hours |
| Optical Input | - | Yes |
Related Speaker Comparisons
More top alternatives to Sony ULT Tower 7:
- Sony ULT Tower 7 vs JBL Partybox Stage 320
- Sony ULT Tower 5 vs Sony ULT Tower 7
- Sony ULT Tower 7 vs Sony SRS-XP700
- Sony ULT Tower 7 vs Sony SRS-XP500
- JBL Partybox 330 vs Audiocase S5
Prices on this page were last checked September 12, 2026 at 9:50 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
Sony ULT Tower 7: $649.99 Amazon eBay
Pros: A compelling large-party value at $649.99: 420W output, an IPX4-rated 30-hour battery, 360-degree sound, wheels and four carry handles at 22.8kg. The full review praises its punchy, clean ULT1 bass, ULT2’s higher-output mode, simplified controls and unusually complete I/O: USB-C, USB-A, RCA, balanced XLR and mic input.
Cons: The reviewer notes that Auracast pairing is not backward-compatible with Sony’s older Party Connect speakers, and the hard-plastic corners lack protective rubber bumpers. IPX4 is splash resistance rather than full weatherproofing; the 30-hour claim requires lights off.
Full Sony ULT Tower 7 review and specifications →
| App | Yes (Sony Sound Connect) |
|---|---|
| Aux Input | RCA input |
| Battery Life | 30 hours (lights off; manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 13.7" x 16.6" x 28" (348 x 422 x 711 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) |
| Guitar Input | No |
| IP Rating | IPX4 |
| Microphone Input | Yes |
| Omnidirectional | Yes (360 degree Party Sound) |
| Output Power | 420W |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB charging) |
| Power Input | AC power cord |
| Removable Battery | No |
| Stereo | Yes |
| TWS | Yes (Stereo Pair) |
| USB Playback | Yes (USB-A) |
| Weight | 50.3 lbs / 22.8 kg |
| Wifi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Tower 7 vs JBL Partybox Stage 320
- Sony ULT Tower 7 vs Sony ULT Tower 5
- Sony ULT Tower 7 vs Sony SRS-XP700
- Sony ULT Tower 7 vs Sony SRS-XP500
- Sony ULT Tower 7 vs JBL Partybox 520
- Sony ULT Tower 7 vs Sony ULT Tower Max
- Sony ULT Tower 7 vs Sony ULT Tower 9
- Sony ULT Tower 7 vs Sony ULT Tower 10
JBL Partybox 330: $599.95 Amazon B&H Photo Video eBay
Pros: A highly complete rolling party speaker: removable battery, telescoping handle and wheels, light show, Auracast, USB-C lossless and optical inputs, plus dual mic/guitar inputs. It supplies a little more power than the 310 and Stage 320, while reviewers report better midrange clarity than the older 310 and the same deep party-speaker bass.
Cons: It remains very large and heavy, and the sound improvement over the Stage 320 is modest rather than transformational. JBL removed the dedicated mic gain/control knobs found on earlier models, a real drawback for frequent karaoke use. Do not upgrade from a 310 or Stage 320 just for the higher watt figure.
Full JBL Partybox 330 review and specifications →
| App | Yes |
|---|---|
| Aux Input | Yes |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 6.0 |
| Charging Time | 3 hours |
| Digital Aux Input | No |
| Drivers | 2x 6.5" (165mm) woofers + 2x 1" (25mm) PEN dome tweeters |
| EQ | Yes (Smart EQ mode) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Optical Input | Yes |
| Output Power | 280W |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, 5V/1A) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Partially |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 37.7 lbs / 17.1 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Partybox 330 vs JBL Partybox Stage 320
- JBL Partybox 330 vs JBL Partybox 310
- JBL Partybox 330 vs JBL Partybox Club 120
- JBL Partybox 330 vs JBL Partybox 130
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