Short answer: the Minirig 4. It ranks #7 of 177 medium speakers by sound quality, rated 4.3/5, at $229.95. The Ultimate Ears Megaboom 4 ranks #171, rated 2.1/5, at $200, $29.95 cheaper, which does not close the gap in sound quality.
The Ultimate Ears Megaboom 4 is the tougher choice. A tough waterproof speaker that floats, with USB-C charging, a long battery and PartyUp linking. It is rated IP67 against Splash resistant for the Minirig 4. Watch for: A lot of distortion at higher volumes.
The Minirig 4 is the better-sounding, longer-running pick. A small, long lasting speaker that gets loud and can add a matching subwoofer, with a 30 hour battery. It is rated for 30 hours of battery against 20 for the Ultimate Ears Megaboom 4. At 1.2 lbs (550 g) it weighs much less than the Ultimate Ears Megaboom 4 at 2.4 lbs (1.1 kg). It supports AAC Bluetooth, which the Ultimate Ears Megaboom 4 lacks. The tradeoff: Calls itself splash resistant and has no official water rating.
Buy the Minirig 4. It is rated higher for sound quality, and the $29.95 you would save on the Ultimate Ears Megaboom 4 does not close the gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A tough waterproof speaker that floats, with USB-C charging, a long battery and PartyUp linking.
A small, long lasting speaker that gets loud and can add a matching subwoofer, with a 30 hour 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
| Ultimate Ears Megaboom 4 | Minirig 4 | |
|---|---|---|
| Price | $200 | $229.95 |
| Ranked | #171 of 177 in Medium Size Portable Bluetooth Speakers | #7 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| IP Rating | IP67 | Splash resistant |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Stereo | No | No |
| Omnidirectional | Yes | Pointing up |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.0 |
| Dimensions | 3.4” x 3.4” x 8.9” (87 x 87 x 225 mm) | 4” x 2.9” (101.6 x 73 mm) (diameter x height) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators | 70mm custom driver |
| TWS | Yes | Yes (Bluetooth or cable) |
| EQ | Yes (via app) | Yes |
| Power Input | USB-C | USB-C |
| Built-in Microphone | No | Yes |
| Weight | 2.4 lbs (1.1 kg) | 1.2 lbs (550 g) |
| Maximum SPL | 91dB (Manufacturer specified) | 106dB (measured by Alan Ross Reviews) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | AAC, SBC |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | - |
| Aux Latency | - | 0ms |
| Bass Extension (-10dB) | - | 56Hz |
| Bluetooth Latency | - | 60ms |
| Power Bank | - | Yes (USB-C) |
| Frequency Response | - | 60Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | - | 50W |
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