Short answer: the Gemini GRV-650L. It ranks #56 of 113 boombox speakers by sound quality, rated 3.3/5, at $149.95. The Onn Medium Party Speaker Gen 2 ranks #65, rated 3.1/5, at $90, $59.95 cheaper, which does not close the gap in sound quality.
What the Gemini GRV-650L does well: A great value party speaker with an included wireless mic, remote, FM radio and water resistance. The tradeoff: Not quite as deep bass as the top ranked speakers.
The Onn Medium Party Speaker Gen 2 is the longer-running, lighter option. An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio. It is rated for 20 hours of battery against 9 for the Gemini GRV-650L. At 11 lbs (5 kg) it weighs noticeably less than the Gemini GRV-650L at 15.7 lbs (7.1 kg). It is rated IPX7 against IPX5 for the Gemini GRV-650L. The tradeoff: Lacking detail compared to the Onn Large Party gen 2 and not as deep of bass.
Buy the Gemini GRV-650L. It is rated higher for sound quality, and the $59.95 saving on the Onn Medium Party Speaker Gen 2 is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Gemini GRV-650L | Onn Medium Party Speaker Gen 2 | |
|---|---|---|
| Price | $149.95 | $90 |
| Ranked | #56 of 113 in Boombox Size Portable Bluetooth Speakers | #65 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~47Hz | - |
| Battery Life | 9 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| MicroSD Playback | Yes | - |
| Power Bank | Yes | Yes (USB-A, 5V/2.1A) |
| Stereo | Partially (1 woofer) | No |
| Omnidirectional | No | No |
| USB Playback | Yes | No |
| Weight | 15.7 lbs (7.1 kg) | 11 lbs (5 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | Yes | Yes |
| Party Mode | No | Yes (Party Sync Mode) |
| Built-in Microphone | No | No |
| Power Input | USB-C | AC Power cord |
| FM Tuner | Yes | Yes (16 presets) |
| Amplifier Power | 320W | 50W RMS / 200W peak |
| Dimensions | 10.9” x 10.2” x 14.4” (277 x 260 x 366 mm) | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) |
| Drivers | 6.5” woofer + tweeter | 8” (203mm) woofer + tweeters |
| IP Rating | IPX5 | IPX7 |
| Maximum SPL | 104dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | - |
| Strap | No | - |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Lights | - | Yes |
Where the Ratings Come From
- Gemini GRV-650L: reviews by Jagist.
- Onn Medium Party Speaker Gen 2: reviews by Jay’s Straight Up Reviews & More.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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