Diamondboxx M3 Specifications and Review

Last updated: August 17, 2026

The Diamondboxx M3 ranks #51 out of 73 total Boombox Size Portable Bluetooth Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.

Prices on this page were last checked August 21, 2026 at 5:30 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.

As an eBay Partner, we may be compensated if you make a purchase.

Diamondboxx M3 - ranked #51 of 73 Boombox Size Portable Bluetooth Speakers · Editor's rating 2.8/5

#51 Diamondboxx M3: $700 eBay

Pros: 114dB output. 200W RMS (400W max) Class A/B amplifier with dual 4” woofers and active crossovers. Multiple battery options (115Wh or 231Wh). Weighs just 12 lbs, fits in overhead compartments. Aluminum heatsink survives full-blast heat.

Cons: Not as deep bass as even the hyperboom. Bass distorted at high levels. Too much treble. Too expensive. No water rating.

How it compares: Just above it: Tronsmart Halo 200 - $560 cheaper, 22 fewer hours of battery life. Just below it: W-King H10 - $485 cheaper, 16 fewer hours of battery life.

AppNo
Aux InputYes
Battery Life40 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneNo
Digital Aux InputNo
Dimensions14.7" x 9" x 8" (373.4 x 228.6 x 203.2 mm)
Drivers3" woofer + tweeter array
EQNo
FM TunerNo
IP RatingNone
OmnidirectionalNo
Output Power200W RMS / 400W peak
Party ModeNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackNo
Weight11 lbs / 5 kg