Short answer: the Onn Medium Party Speaker Gen 2. It ranks #45 of 75 boombox speakers by sound quality at $90; the Diamondboxx M3 ranks #53 and costs $700, so there is not much of a tradeoff to weigh.
What the Onn Medium Party Speaker Gen 2 offers: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port. Watch for: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
What the Diamondboxx M3 offers: 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. Watch for: 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.
Buy the Onn Medium Party Speaker Gen 2. It ranks higher for sound quality than the Diamondboxx M3 and costs less, so there is no real case for the other one.
There is a real battery-life gap here: the Diamondboxx M3 is rated for 40 hours, the Onn Medium Party Speaker Gen 2 only 20 hours.
There is a real gap in water resistance: the Onn Medium Party Speaker Gen 2 at IPX7 (brief submersion) against the Diamondboxx M3, which has no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Onn Medium Party Speaker Gen 2 | Diamondboxx M3 | |
|---|---|---|
| Price | $90 | $700 |
| Ranked | #45 of 75 in Boombox Size Portable Bluetooth Speakers | #53 of 75 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| FM Tuner | Yes (16 presets) | No |
| IP Rating | IPX7 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Power Input | AC Power cord | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | Yes | Yes |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| Amplifier Power | 50W RMS / 200W peak | 200W RMS / 400W peak |
| Dimensions | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) | 14.7" x 9" x 8" (373.4 x 228.6 x 203.2 mm) |
| Weight | 11 lbs (5 kg) | 11 lbs (5 kg) |
| Drivers | 8" (203mm) woofer + tweeters | 3" woofer + tweeter array |
| Digital Aux Input | No | No |
| Lights | Yes | - |
Related Speaker Comparisons
How Onn Medium Party Speaker Gen 2 compares with other leading options:
- Tribit Stormbox Blast vs Onn Medium Party Speaker Gen 2
- JBL Partybox Encore 2 vs Onn Medium Party Speaker Gen 2
- JBL Partybox Encore Essential 2 vs Onn Medium Party Speaker Gen 2
- Onn Medium Party Speaker Gen 2 vs JBL Partybox Encore
- JBL Partybox Encore Essential vs Onn Medium Party Speaker Gen 2
Prices on this page were last checked September 16, 2026 at 12:41 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.
The Two Speakers In Full
Onn Medium Party Speaker Gen 2: $90 Walmart eBay
Pros: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port.
Cons: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
Full Onn Medium Party Speaker Gen 2 review and specifications →
| Amplifier Power | 50W RMS / 200W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) |
| Drivers | 8" (203mm) woofer + tweeters |
| EQ | No |
| FM Tuner | Yes (16 presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Sync Mode) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs (5 kg) |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: ONN Large Party Speaker Gen 2 vs Medium Party Speaker Gen 2 🤜🤛A Family Feud🔌Plugged In Bass Boost On More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Skullcandy Barrel XT vs ONN Medium Party Speaker Gen. 2 😬(Both Bass Boost On🔉) The Price is Right?🤑
- Head-to-Head Comparisons
- Onn Medium Party Speaker Gen 2 vs JBL Partybox On the Go
- Onn Medium Party Speaker Gen 2 vs Soundcore Rave Party 2
- Onn Medium Party Speaker Gen 2 vs Sony ULT Field 7
- Onn Medium Party Speaker Gen 2 vs Skullcandy Barrel
- Onn Medium Party Speaker Gen 2 vs Yeahbox Sonic Boom Max 3
- Onn Medium Party Speaker Gen 2 vs Demerbox DB2
- Onn Medium Party Speaker Gen 2 vs Tronsmart Bang Max
- Onn Medium Party Speaker Gen 2 vs W-King D10
- See all 45 comparisons
Diamondboxx M3: $700 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.
Full Diamondboxx M3 review and specifications →
| Amplifier Power | 200W RMS / 400W peak |
|---|---|
| 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 |
| 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 Marshall Tufton
- Diamondboxx M3 vs Soundcore Rave Party 2
- See all 44 comparisons