Short answer: these are not really competing for the same buyer. The Turtlebox Gen 3 ranks #105 out of 53 boombox speakers, while the JBL Partybox 310 ranks #4 out of its own party-speaker class. Treat this as a size-and-purpose question rather than a straight sound-quality comparison.
The Partybox 310 is the far more capable speaker on paper and in the numbers. Its pros describe the deepest bass of any battery-powered speaker and the most balanced sound in its class, backed by a measured 32Hz bass extension against roughly 65Hz for the Turtlebox. It also runs dual 6.5-inch woofers and dual 2.5-inch tweeters at 240W total, versus a single 6x9-inch woofer and 1-inch tweeter at 50W for the Turtlebox. That comes at a real cost in bulk: the Partybox 310 weighs about 37.5 lbs (17 kg) against 10 lbs (4.5 kg) for the Turtlebox.
The Turtlebox’s own cons are unusually blunt for a product page. Reviewers note it sounds basically identical across generations despite added features, rarely reaches its claimed output at a proper measuring distance, has barely any bass, and can rattle at higher volume. Its real strengths are ruggedness and portability: IP67 water resistance against the Partybox’s IPX4, plus 25 hours of battery life against 18 hours, in a package a fraction of the weight.
One note: the JBL Partybox 310 is no longer sold new, but at #4 of 53 party speakers by sound quality it still outranks most current models, so used is worth considering. The JBL Partybox 310’s replacement, the JBL Partybox 330, is still sold new.
Buy the JBL Partybox 310 if you want genuine bass output and balanced sound for a stationary setup and don’t mind the size and weight.
Buy the Turtlebox Gen 3 if you need something rugged and portable enough to carry or throw in a truck bed, and outright sound quality is not the priority.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Turtlebox Gen 3 | JBL Partybox 310 | |
|---|---|---|
| Price | $430.00 | $579.95 Discontinued |
| Ranked | #105 of 113 in Boombox Size Portable Bluetooth Speakers | #4 of 53 in Party Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~65Hz | 32Hz |
| Battery Life | 25 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX4 |
| MicroSD Playback | Yes | - |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| Weight | 10 lbs (4.54 kg) | 37.5 lbs (17 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes |
| EQ | No | Yes (3 band) |
| TWS | Yes | Yes |
| Party Mode | Yes (Turtlebox Party Mode) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A, 5V/2.1A) |
| USB Playback | No | Yes |
| Built-in Microphone | No | - |
| Power Input | DC Barrel Connector (15V/3A) | AC Power cord |
| Bluetooth Version | 5.4 | 5.1 |
| Amplifier Power | 50W | 240W |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) | 27.1”H x 12.8”W x 14.5”D (687.7 x 325.6 x 367.8 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter | 2x 6.5” (165mm) woofers + 2x 2.5” (65mm) tweeters |
| Digital Aux Input | No | No |
| Strap | No | No |
| Microphone Input | Yes (3.5mm) | Yes (Karaoke mode with echo effect) |
| Battery Capacity | 85Wh | - |
| Maximum SPL | 102dB (measured by Williston Audio Labs) | - |
| Charging Time | - | 3.5 hours |
| Guitar Input | - | Yes |
| Lights | - | Yes |
| Wheels | - | Yes |
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