Short answer: the JBL Partybox On the Go. It ranks #66 of 112 boombox speakers by sound quality (rated 3.0/5) at $249.95 and is still sold new; the Diamondboxx M3 ranks #76 (rated 2.8/5) and is discontinued, so it is only an option used.
The JBL Partybox On the Go is the tougher choice. A battery party speaker with an included wireless microphone and a detachable shoulder strap. It is rated IPX4, while the Diamondboxx M3 has no water resistance. The tradeoff: Battery life is short, and its sound trails the rest of the Partybox line.
The Diamondboxx M3 is the longer-running, lighter choice. A compact, very loud boombox with a powerful amplifier and a choice of large battery packs. It is rated for 40 hours of battery against 6 for the JBL Partybox On the Go. At 11 lbs (5 kg) it weighs noticeably less than the JBL Partybox On the Go at 16.5 lbs (7.5 kg). The tradeoff: Despite its output, bass does not reach as deep as the best large portables and can distort when pushed hard.
Buy the JBL Partybox On the Go. It is rated higher for sound quality; the Diamondboxx M3 is no longer sold new.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A battery party speaker with an included wireless microphone and a detachable shoulder strap.
A compact, very loud boombox with a powerful amplifier and a choice of large battery packs.
Prices on this page were last checked October 31, 2026 at 7:11 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
| JBL Partybox On the Go | Diamondboxx M3 | |
|---|---|---|
| Price | $249.95 | $700 Discontinued |
| Ranked | #66 of 112 in Boombox Size Portable Bluetooth Speakers | #76 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 49Hz | - |
| Battery Life | 6 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IPX4 | None |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| USB Playback | Yes | No |
| Weight | 16.5 lbs (7.5 kg) | 11 lbs (5 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | Yes (JBL PartyBox app) | No |
| EQ | No | No |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Built-in Microphone | No | No |
| Power Input | USB-C | USB-C |
| Bluetooth Version | 4.2 | 5.0 |
| Amplifier Power | 100W | 200W RMS / 400W peak |
| Dimensions | 19.3” x 8.8” x 9.6” (489 x 224 x 244.5 mm) | 14.7” x 9” x 8” (373.4 x 228.6 x 203.2 mm) |
| Drivers | 5.1” woofer + tweeters | 3” woofer + tweeter array |
| Maximum SPL | 94dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| FM Tuner | - | No |
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