Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Partybox 310 is the better pick: it ranks #4 of 53 party speakers by sound quality (rated 4.5/5), against #27 (rated 3.6/5) for the Samsung MX-ST50B. If you want one new, the JBL Partybox 330 replaces the JBL Partybox 310 and is rated 4.6/5 at $629.95.
The case for the Samsung MX-ST50B: It sounds reasonably balanced, though it’s a little tough to judge from the available sound samples and more comparisons would help. The catch: the bass isn’t as deep as the Partybox 110 or other higher ranked speakers, and it needs to be plugged in to reach higher volume.
Buy the JBL Partybox 310 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, buy the JBL Partybox 330, which replaces the JBL Partybox 310.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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 310 | Samsung MX-ST50B | |
|---|---|---|
| Price | $579.95 Discontinued | $300 Discontinued |
| Ranked | #4 of 53 in Party Size Portable Bluetooth Speakers | #27 of 53 in Party Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 32Hz | - |
| Battery Life | 18 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | aptX, AAC, SBC |
| Charging Time | 3.5 hours | - |
| EQ | Yes (3 band) | Yes |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | IPX5 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | No | Yes (Samsung Group Play up to 10 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | Yes |
| Weight | 37.5 lbs (17 kg) | 26.2 lbs (11.9 kg) |
| Amplifier Power | 240W | 240W (AC) / 90W (battery) |
| Drivers | 2x 6.5” (165mm) woofers + 2x 2.5” (65mm) tweeters | 2x 6.5” woofers, 2x 2.5” tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Dimensions | 27.1”H x 12.8”W x 14.5”D (687.7 x 325.6 x 367.8 mm) | 13” x 26.2” x 11.9” (329 x 665 x 301 mm) |
| Bluetooth Version | 5.1 | 5.0 |
| Strap | No | No |
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