Short answer: the Zealot ZE01. It ranks #38 of 112 boombox speakers by sound quality (rated 3.7/5) at $126.02 and is still sold new; the Diamondboxx M3 ranks #76 (rated 2.8/5) and is discontinued, so it is only an option used.
Why pick the Diamondboxx M3: A compact, very loud boombox with a powerful amplifier and a choice of large battery packs. Watch for: Despite its output, bass does not reach as deep as the best large portables and can distort when pushed hard.
The Zealot ZE01 is the better-sounding, tougher option. An affordable stereo boombox with a 40 hour battery, water resistance and a power bank for long days outdoors. It is rated IPX6, while the Diamondboxx M3 has no water resistance. It has an adjustable EQ, which the Diamondboxx M3 lacks. The catch: A little rolled off up top and not that balanced through the rest of the range.
Buy the Zealot ZE01. It is rated higher for sound quality and still sold new, while the Diamondboxx M3 is discontinued.
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.
An affordable stereo boombox with a 40 hour battery, water resistance and a power bank for long days outdoors.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Diamondboxx M3 | Zealot ZE01 | |
|---|---|---|
| Price | $700 Discontinued | $126.02 |
| Ranked | #76 of 112 in Boombox Size Portable Bluetooth Speakers | #38 of 112 in Boombox Size Portable Bluetooth Speakers |
| Bluetooth Version | 5.0 | 5.4 |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | None | IPX6 |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 11 lbs (5 kg) | 13.2 lbs (6.0 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-A + USB-C) |
| USB Playback | No | Yes |
| Built-in Microphone | No | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| Amplifier Power | 200W RMS / 400W peak | 120W RMS / 150W peak |
| Dimensions | 14.7” x 9” x 8” (373.4 x 228.6 x 203.2 mm) | 13.1” x 11.2” x 8.1” (332 x 284 x 207 mm) |
| Drivers | 3” woofer + tweeter array | Dual 120mm speakers + dual 42mm speakers |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 45Hz |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
How Zealot ZE01 compares with other leading options: