Short answer: the Marshall Stockwell II for better sound quality, the Onn Portable FM Boombox for the lower price. The Marshall Stockwell II ranks #11 of 115 large speakers, rated 4.5/5, at $229.99. The Onn Portable FM Boombox ranks #26, rated 4.2/5, at $74.83, $155.16 cheaper.
The Marshall Stockwell II is the lighter pick. A light, strap equipped speaker with some of the most natural sound around, even off to the side, and a long battery. At 3.1 lbs (1.4 kg) it weighs noticeably less than the Onn Portable FM Boombox at 4.9 lbs (2.22 kg). The tradeoff: Not very loud, and the added DSP reverb may annoy purists.
The Onn Portable FM Boombox is the tougher pick. An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery. It is rated IPX7 against IPX4 for the Marshall Stockwell II. It links with other speakers (Party Sync, pairs with 1 other onn. speaker), which the Marshall Stockwell II cannot. It plays in stereo from a single unit, unlike the Marshall Stockwell II. Watch for: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size.
Buy the Marshall Stockwell II when sound quality outweighs the price for you, and the Onn Portable FM Boombox when the price outweighs sound quality instead.
Want more options? Browse the full Portable Bluetooth rankings.
A light, strap equipped speaker with some of the most natural sound around, even off to the side, and a long battery.
An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery.
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Specifications Side By Side
| Marshall Stockwell II | Onn Portable FM Boombox | |
|---|---|---|
| Price | $229.99 | $74.83 |
| Ranked | #11 of 115 in Large Size Portable Bluetooth Speakers | #26 of 115 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 44Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| IP Rating | IPX4 | IPX7 |
| Bluetooth Latency | 50ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Party Sync, pairs with 1 other onn. speaker) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Weight | 3.1 lbs (1.4 kg) | 4.9 lbs (2.22 kg) |
| App | No | No |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Power Bank | No | Yes (USB-A) |
| Bluetooth Version | 5.0 | - |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) | 13.8” x 5.9” x 7.7” (350 x 149 x 195 mm) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters | 2 speakers |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 20W | 25W RMS (100W peak) |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | - |
| FM Tuner | - | Yes (10 presets) |
| Removable Battery | - | No |
| Lights | - | Yes |
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