Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Partybox 300 is the better pick: it ranks #10 of 44 party speakers by sound quality (rated 4.3/5), against #30 (rated 3.1/5) for the Soundboks Go. If you want one new, the Sony ULT Tower 7 ranks #1 at $648.
The JBL Partybox 300 is the better-sounding, deeper-bass choice. Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. Its bass reaches about 40Hz before falling 10dB, against 55Hz for the Soundboks Go. The catch: Hard to carry, too tall, drags on the ground.
The Soundboks Go is the longer-running, lighter option. Exceptional 40-hour battery life at mid-volume (10 hours at full volume), swappable design (second battery $200 available). It is rated for 40 hours of battery against 18 for the JBL Partybox 300. At 19.8 lbs (9 kg) it weighs much less than the JBL Partybox 300 at 35.3 lbs (16 kg). It links with other speakers (TeamUp, up to 5 speakers), which the JBL Partybox 300 cannot. The tradeoff: Not as loud as the other Soundboks.
Buy the JBL Partybox 300 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Sony ULT Tower 7 instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox 300 | Soundboks Go | |
|---|---|---|
| Price | $300 Discontinued | $799 Discontinued |
| Ranked | #10 of 44 in Party Size Portable Bluetooth Speakers | #30 of 44 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 40Hz | 55Hz |
| Battery Life | 18 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 27” x 13” x 12.7” (685.8 x 330.2 x 322.6 mm) | 18” x 12” x 10” (457.2 x 304.8 x 254 mm) |
| EQ | No | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | 40Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | None | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | No | Yes (TeamUp, up to 5 speakers) |
| Power Bank | Yes (USB-A) | No |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Yes (lying down) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | No |
| Weight | 35.3 lbs (16 kg) | 19.8 lbs (9 kg) |
| Amplifier Power | 120W | 2 x 72W |
| Drivers | 2x 6.5” (165mm) woofers + 3x 2.25” (57mm) tweeters | 10” woofer, 1” tweeter |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | No | - |
| Maximum SPL | - | 121dB (Manufacturer specified) |
| Removable Battery | - | Yes |
Related Speaker Comparisons
More top alternatives to JBL Partybox 300:
- Sony ULT Tower 7 vs JBL Partybox 300
- JBL Partybox 330 vs JBL Partybox 300
- JBL Partybox Stage 320 vs JBL Partybox 300
- JBL Partybox 310 vs JBL Partybox 300
- Sony ULT Tower 5 vs JBL Partybox 300
Prices on this page were last checked October 4, 2026 at 9:58 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 300: $300 Discontinued eBay
Newer model: the JBL Partybox 330, ranked higher, rated 4.6/5.
Pros: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. 2x 6.5” woofers + 3x 2.25” tweeters, bass boost function, 45Hz-20kHz frequency range. 18-hour battery with 10400mAh capacity. Multiple inputs (RCA, USB, 3.5mm aux, mic, guitar). LED light modes (meter/pulse/party). True Wireless Stereo pairing up to 2 units. Measured bass extension of 40Hz (-10dB).
Cons: Hard to carry, too tall, drags on the ground. Max spl and bass extension are only as good as the Partybox 100. No real reason to ever get one, get a Partybox 100 instead. Discontinued.
Full JBL Partybox 300 review and specifications →
| Amplifier Power | 120W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 27” x 13” x 12.7” (685.8 x 330.2 x 322.6 mm) |
| Drivers | 2x 6.5” (165mm) woofers + 3x 2.25” (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Stereo | Yes (lying down) |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 35.3 lbs (16 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- JBL Partybox 300 vs JBL Partybox 110
- JBL Partybox 300 vs Onn XL Wireless Party Speaker
- JBL Partybox 300 vs JBL Partybox 100
- JBL Partybox 300 vs Zealot PT21
- JBL Partybox 300 vs JBL Partybox 130
- JBL Partybox 300 vs JBL Partybox Club 120
- JBL Partybox 300 vs Sony SRS-XP700
- JBL Partybox 300 vs Sony SRS-XP500
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Soundboks Go: $799 Discontinued eBay
Newer model: the Soundboks Mix, ranked higher, rated 3.2/5.
Pros: Exceptional 40-hour battery life at mid-volume (10 hours at full volume), swappable design (second battery $200 available). 7.8Ah Li-ion with external charging option and pass-through charging capability. 121dB max volume (Bass+ mode). Premium audio quality, durable ABS polycarbonate with rubberized bumpers. Portable enough for vehicle adventures. High efficiency drivers reach 2-3x the volume of typical speakers for the same wattage. Measured bass extension of 55Hz (-10dB).
Cons: Not as loud as the other Soundboks. Not as neutral or as much bass as the above Partyboxes. Not stereo. External power brick for charging. Discontinued; Soundboks has removed it from their lineup and the product page is gone.
Full Soundboks Go review and specifications →
| Amplifier Power | 2 x 72W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 55Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 18” x 12” x 10” (457.2 x 304.8 x 254 mm) |
| Drivers | 10” woofer, 1” tweeter |
| EQ | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Maximum SPL | 121dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | Yes (TeamUp, up to 5 speakers) |
| Power Bank | No |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 19.8 lbs (9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- GYMCADDY: Soundboks Go Vs Soundboks 3 - Which One Is Right For You? More from GYMCADDY →
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- GYMCADDY: Soundboks Go Vs JBL Boombox 2 Vs UE Hyperboom Vs Sony XG500
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- Head-to-Head Comparisons