Short answer: the Diamondboxx M3. It ranks #51 of 73 boombox speakers by sound quality at $700; the Turtlebox Grande ranks #54 and costs $730, so there is not much of a tradeoff to weigh.
What the Diamondboxx M3 offers: 114dB output. Watch for: Not as deep bass as even the hyperboom.
What the Turtlebox Grande offers: 10-inch woofer. Watch for: They pretty much lie about all their specs and sound just okay in all youtube sound samples.
Buy the Diamondboxx M3. It ranks higher for sound quality than the Turtlebox Grande and costs less, so there is no real case for the other one.
If battery life is a priority, the Diamondboxx M3 is rated for 40 hours versus 25 hours for the Turtlebox Grande.
If water resistance matters to you, the Turtlebox Grande at IP67 (brief submersion) holds up far better than the Diamondboxx M3 at no water resistance.
Specifications Side By Side
| Diamondboxx M3 | Turtlebox Grande | |
|---|---|---|
| Price | $700 | $730.00 |
| Ranked | #51 of 73 in Boombox Size Portable Bluetooth Speakers | #54 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| IP Rating | None | IP67 |
| Stereo | Yes | Yes |
| Weight | 11 lbs / 5 kg | 18.8 lbs / 8.53 kg |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | Yes | Yes |
| Party Mode | No | Yes (Turtlebox Party Mode) |
| Power Bank | No | Yes (USB-C) |
| USB Playback | No | No |
| Built in Microphone | No | Yes |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| Output Power | 200W RMS / 400W peak | 86W |
| Dimensions | 14.7" x 9" x 8" (373.4 x 228.6 x 203.2 mm) | 14" x 8.4" x 11.5" (355.6 x 213.4 x 292.1 mm) |
| Drivers | 3" woofer + tweeter array | 1x 10" (254mm) woofer + 1x 1.25" (32mm) titanium tweeter |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | ~55Hz |
| MicroSD Playback | - | Yes |
| Bluetooth Version | - | 5.4 |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL Boombox vs Bumpboxx Flare 8
- Bumpboxx Flare 8 vs Braven XXL 2
- W-King T11 vs Bumpboxx Flare 8
- Diamondboxx M3 vs Artsound PWR05
- Turtlebox Gen 3 vs Turtlebox Grande
The Two Speakers In Full
Diamondboxx M3: $700
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.
Full Diamondboxx M3 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| 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 |
| Output Power | 200W RMS / 400W peak |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs / 5 kg |
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Turtlebox Grande: $730.00 Amazon
Pros: 10-inch woofer. IP67 submersible shell with crush-proof ABS exterior. 158Wh battery provides ~3 days of playback. Bluetooth 5.4, party mode (100+ speakers).
Cons: They pretty much lie about all their specs and sound just okay in all youtube sound samples. Only 100w will never hit 126db at a reasonable measuring distance. Putting your db meter right against the speaker doesn’t count, 1 meter distance is the standard. Barely any bass for a 10” woofer. Overpriced and not worth it.
Full Turtlebox Grande review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 14" x 8.4" x 11.5" (355.6 x 213.4 x 292.1 mm) |
| Drivers | 1x 10" (254mm) woofer + 1x 1.25" (32mm) titanium tweeter |
| EQ | No |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Output Power | 86W |
| Party Mode | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 18.8 lbs / 8.53 kg |
As an eBay Partner, we may be compensated if you make a purchase.
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