Short answer: the Tronsmart Bang Max. It ranks #52 of 112 boombox speakers by sound quality (rated 3.4/5) at $229.99 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 Diamondboxx M3 is the longer-running pick. 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 24 for the Tronsmart Bang Max. The tradeoff: Despite its output, bass does not reach as deep as the best large portables and can distort when pushed hard.
The Tronsmart Bang Max is the better-sounding, tougher pick. A loud, feature packed party speaker with big bass, app EQ, lights, and separate mic and guitar inputs. It is rated IPX6, while the Diamondboxx M3 has no water resistance. It has an adjustable EQ, which the Diamondboxx M3 lacks. Watch for: Its bass-first tuning prioritizes impact over accuracy: upper mids and lower treble can sound unnatural, while fine midrange and treble detail are limited.
Buy the Tronsmart Bang Max. It is rated higher for sound quality, and the Diamondboxx M3 is discontinued, so it is only available used.
Want more options? Browse the full Portable Bluetooth rankings.
A compact, very loud boombox with a powerful amplifier and a choice of large battery packs.
A loud, feature packed party speaker with big bass, app EQ, lights, and separate mic and guitar inputs.
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Specifications Side By Side
| Diamondboxx M3 | Tronsmart Bang Max | |
|---|---|---|
| Price | $700 Discontinued | $229.99 |
| Ranked | #76 of 112 in Boombox Size Portable Bluetooth Speakers | #52 of 112 in Boombox Size Portable Bluetooth Speakers |
| Bluetooth Version | 5.0 | 5.3 |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | None | IPX6 |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 11 lbs (5 kg) | 12.8 lbs (5.8 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-A) |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| Power Input | USB-C | AC Power brick |
| FM Tuner | No | - |
| Amplifier Power | 200W RMS / 400W peak | 130W |
| Dimensions | 14.7” x 9” x 8” (373.4 x 228.6 x 203.2 mm) | 18.5” x 7.8” x 10.2” (470 x 199 x 260 mm) |
| Drivers | 3” woofer + tweeter array | 2x ~165mm (6.5”) woofers + 2x ~63mm (2.5”) mid drivers + 2x ~25mm (1”) tweeters |
| Digital Aux Input | No | No |
| Aux Latency | - | 16ms |
| Bass Extension (-10dB) | - | 39Hz |
| Bluetooth Latency | - | 160ms |
| Maximum SPL | - | 111dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
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