Short answer: the Diamondboxx M3, though neither ranks well in its class. It ranks #66 of 89 boombox speakers by sound quality, rated 2.8/5, at $700; the Artsound PWR05 ranks #87, rated 2.0/5, and costs $799, so there is not much of a tradeoff to weigh. Both are rated below 3.0/5 among the 89 boombox speakers, and the Tribit Stormbox Blast, ranked #2 at $179.99, is a better place to start if sound quality matters.
What the Diamondboxx M3 does well: An unusually compact 5kg high-output boombox, with a claimed 200W RMS Class A/B amplifier, 114dB maximum level, active crossovers 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 case for the Artsound PWR05: 150W (75W RMS) 3-way speaker with 4 drivers, no distortion even at high volume. The tradeoff: Strange frequency peaks, sound is very hollow.
One note: the Diamondboxx M3 is discontinued and no longer widely available new.
Buy the Diamondboxx M3. It is rated higher for sound quality than the Artsound PWR05 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Battery life favors the Diamondboxx M3: rated for 40 hours against 10 hours for the Artsound PWR05.
There is a real gap in water resistance: the Artsound PWR05 at IPX5 (water jets) against the Diamondboxx M3, which has no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Diamondboxx M3 | Artsound PWR05 | |
|---|---|---|
| Price | $700 Discontinued | $799 Discontinued |
| Ranked | #66 of 89 in Boombox Size Portable Bluetooth Speakers | #87 of 89 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| IP Rating | None | IPX5 |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| Weight | 11 lbs (5 kg) | 9.7 lbs (4.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | Yes | No |
| Party Mode | No | No |
| Power Bank | No | No |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| Amplifier Power | 200W RMS / 400W peak | 75W RMS / 150W peak |
| Dimensions | 14.7” x 9” x 8” (373.4 x 228.6 x 203.2 mm) | 16.9” x 7.1” x 7.1” (430 x 180 x 180 mm) |
| Drivers | 3” woofer + tweeter array | 5” woofer + tweeter |
| Digital Aux Input | No | No |
| Strap | - | Yes (carry strap) |
Related Speaker Comparisons
More top alternatives to Diamondboxx M3:
- Tribit Stormbox Blast vs Diamondboxx M3
- JBL Partybox Encore 2 vs Diamondboxx M3
- JBL Partybox Encore Essential 2 vs Diamondboxx M3
- Diamondboxx M3 vs JBL Partybox Encore
- JBL Partybox Encore Essential vs Diamondboxx M3
Prices on this page were last checked September 29, 2026 at 3:43 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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The Two Speakers In Full
Diamondboxx M3: $700 Discontinued eBay
Pros: An unusually compact 5kg high-output boombox, with a claimed 200W RMS Class A/B amplifier, 114dB maximum level, active crossovers and a choice of large battery packs. It has aux input, USB-C power and TWS pairing, while the aluminum heat sink is designed to sustain loud playback without thermal shutdown.
Cons: Despite its output, bass does not reach as deep as the best large portables and can distort when pushed hard. The treble-forward tuning can sound aggressive, there is no app or EQ to correct it, and the lack of a water rating makes it a poor match for poolside or rough-weather use. Discontinued.
Full Diamondboxx M3 review and specifications →
| Amplifier Power | 200W RMS / 400W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 14.7” x 9” x 8” (373.4 x 228.6 x 203.2 mm) |
| Drivers | 3” woofer + tweeter array |
| EQ | No |
| FM Tuner | No |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs (5 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Diamondboxx M3 vs W-King D10
- Diamondboxx M3 vs Demerbox DB2
- Diamondboxx M3 vs Turtlebox Grande
- Diamondboxx M3 vs Bumpboxx Flare 6
- Diamondboxx M3 vs EcoXGear Defender
- Diamondboxx M3 vs JBL Partybox On the Go
- Diamondboxx M3 vs Onn Medium Party Speaker Gen 2
- Diamondboxx M3 vs Marshall Tufton
- See all 44 comparisons
Artsound PWR05: $799 Discontinued eBay
Pros: 150W (75W RMS) 3-way speaker with 4 drivers, no distortion even at high volume. 10 hour battery life. Leather carrying strap, rugged ABS housing. TWS technology pairs two units wirelessly. Aux input for other sources.
Cons: Strange frequency peaks, sound is very hollow. Discontinued.
Full Artsound PWR05 review and specifications →
| Amplifier Power | 75W RMS / 150W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.9” x 7.1” x 7.1” (430 x 180 x 180 mm) |
| Drivers | 5” woofer + tweeter |
| EQ | No |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (carry strap) |
| TWS | No |
| USB Playback | No |
| Weight | 9.7 lbs (4.4 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons