Short answer: the Minirig 4 with subwoofer for better sound quality, the Onn Portable FM Boombox for the lower price. The Minirig 4 with subwoofer ranks #5 of 115 large speakers, rated 4.6/5, at $290. The Onn Portable FM Boombox ranks #26, rated 4.2/5, at $74.83, $215.17 cheaper.
The Minirig 4 with subwoofer is the better-sounding, longer-running choice. A compact speaker and wireless subwoofer pair with some of the most balanced sound available, a long battery and deep, impactful bass. It is rated for 30 hours of battery against 16 for the Onn Portable FM Boombox. At 3.2 lbs (1.44 kg) it weighs noticeably less than the Onn Portable FM Boombox at 4.9 lbs (2.22 kg). It has an adjustable EQ, which the Onn Portable FM Boombox lacks. The tradeoff: Not stereo, app is buggy.
The Onn Portable FM Boombox is the tougher option. An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery. It is rated IPX7 against Splash resistant for the Minirig 4 with subwoofer. It links with other speakers (Party Sync, pairs with 1 other onn. speaker), which the Minirig 4 with subwoofer cannot. It plays in stereo from a single unit, unlike the Minirig 4 with subwoofer. Watch for: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size.
Buy the Minirig 4 with subwoofer if sound quality matters more than the price. Buy the Onn Portable FM Boombox if the price matters more than sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A compact speaker and wireless subwoofer pair with some of the most balanced sound available, a long battery and deep, impactful bass.
An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Minirig 4 with subwoofer | Onn Portable FM Boombox | |
|---|---|---|
| Price | $290 | $74.83 |
| Ranked | #5 of 115 in Large Size Portable Bluetooth Speakers | #26 of 115 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | - |
| Battery Life | 30 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | Splash resistant | IPX7 |
| Bluetooth Latency | 60ms | - |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 3.2 lbs (1.44 kg) | 4.9 lbs (2.22 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | Yes |
| Party Mode | No | Yes (Party Sync, pairs with 1 other onn. speaker) |
| Bluetooth Version | 5.0 | - |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) | 13.8” x 5.9” x 7.7” (350 x 149 x 195 mm) |
| Drivers | 70mm custom driver | 2 speakers |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | - |
| Amplifier Power | 50W | 25W RMS (100W peak) |
| Digital Aux Input | No | No |
| FM Tuner | - | Yes (10 presets) |
| Removable Battery | - | No |
| Lights | - | Yes |
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