These are not really the same size class, and that is the honest framing here. The Sony ULT Tower 7 ranks #1 of 40 party speakers by sound quality at $649.99; the JBL Partybox On the Go ranks #47 of 76 boombox speakers by sound quality at $300.
Why pick the Sony ULT Tower 7: A compelling large-party value at $650: 420W output, an IPX4-rated 30-hour battery, 360-degree sound, wheels and four carry handles at 22.8kg. The catch: 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.
Why pick the JBL Partybox On the Go: JBL Partybox On the Go uses 5.1” woofer + tweeters. The tradeoff: Bass is limited by its 49Hz specification.
Buy the Sony ULT Tower 7 at $649.99 for a party speaker, or the JBL Partybox On the Go at $300 for a boombox speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Tower 7 | JBL Partybox On the Go | |
|---|---|---|
| Price | $649.99 | $300 |
| Ranked | #1 of 40 in Party Size Portable Bluetooth Speakers | #47 of 76 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Sony Sound Connect) | Yes (JBL PartyBox app) |
| Aux Input | RCA input | Yes |
| Battery Life | 30 hours (lights off; manufacturer specified) | 6 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 4.2 |
| Built-in Microphone | No | No |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 13.7” x 16.6” x 28” (348 x 422 x 711 mm) | 19.3” x 8.8” x 9.6” (489 x 224 x 244.5 mm) |
| Drivers | 7 drivers: 1x woofer, 2x midrange, 2x front tweeter, 2x rear tweeter | 5.1” woofer + tweeters |
| EQ | Yes (10 band; ULT1 / ULT2 / Flat) | No |
| Guitar Input | No | - |
| IP Rating | IPX4 | IPX4 |
| Microphone Input | Yes | - |
| Omnidirectional | Yes (360 degree Party Sound) | No |
| Amplifier Power | 420W | 100W |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB charging) | Yes (USB-A, 5V/2.1A) |
| Power Input | AC power cord | USB-C |
| Removable Battery | No | - |
| Stereo | Yes | Partially |
| TWS | Yes (Stereo Pair) | Yes |
| USB Playback | Yes (USB-A) | Yes |
| Weight | 50.3 lbs (22.8 kg) | 16.5 lbs (7.5 kg) |
| Wi-Fi | No | - |
| Lights | Yes | - |
| Wheels | Yes | - |
| Strap | No | Yes (detachable shoulder strap) |
| Bass Extension (-10dB) | - | 49Hz |
| Maximum SPL | - | 94dB (Manufacturer specified) |
Related Speaker Comparisons
More top alternatives to Sony ULT Tower 7:
- Sony ULT Tower 7 vs JBL Partybox 330
- Sony ULT Tower 7 vs JBL Partybox Stage 320
- Sony ULT Tower 5 vs Sony ULT Tower 7
- JBL Partybox Club 120 vs Sony ULT Tower 7
- JBL Partybox 130 vs Sony ULT Tower 7
Prices on this page were last checked September 26, 2026 at 11:14 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 $650: 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 →
| Amplifier Power | 420W |
|---|---|
| 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 |
| Lights | Yes |
| Microphone Input | Yes |
| Omnidirectional | Yes (360 degree Party Sound) |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB charging) |
| Power Input | AC power cord |
| Removable Battery | No |
| Stereo | Yes |
| Strap | No |
| TWS | Yes (Stereo Pair) |
| USB Playback | Yes (USB-A) |
| Weight | 50.3 lbs (22.8 kg) |
| Wheels | Yes |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Tower 7 vs JBL Partybox 330
- Sony ULT Tower 7 vs JBL Partybox Stage 320
- Sony ULT Tower 7 vs Sony ULT Tower 5
- Sony ULT Tower 7 vs JBL Partybox Club 120
- Sony ULT Tower 7 vs JBL Partybox 130
- Sony ULT Tower 7 vs JBL Partybox 110
- Sony ULT Tower 7 vs Onn XL Wireless Party Speaker
- Sony ULT Tower 7 vs Zealot PT21
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JBL Partybox On the Go: $300 Amazon eBay
Newer model: the JBL PartyBox On-The-Go 2 Plus, rated 4.4/5.
Pros: JBL Partybox On the Go uses 5.1” woofer + tweeters. Its 7.5 kg, claimed 6 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 94dB and limited-stereo playback make it a practical option for its intended room or portable use. A wireless microphone is included. Measured bass extension of 49Hz (-10dB).
Cons: Bass is limited by its 49Hz specification. No EQ adjustment. Battery life is short, and its sound trails the rest of the Partybox line.
Full JBL Partybox On the Go review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | Yes (JBL PartyBox app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.3” x 8.8” x 9.6” (489 x 224 x 244.5 mm) |
| Drivers | 5.1” woofer + tweeters |
| EQ | No |
| IP Rating | IPX4 |
| Maximum SPL | 94dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.5 lbs (7.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Partybox On the Go vs Sony SRS-XG500
- JBL Partybox On the Go vs Onn Medium Party Speaker Gen 2
- JBL Partybox On the Go vs JBL Boombox
- JBL Partybox On the Go vs Soundcore Rave Party 2
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