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 3 ranks #107, rated 3.0/5, at $191.99, $37.96 cheaper, which does not close the gap in sound quality.
The Minirig 4 is the better-sounding, deeper-bass choice. A small, long lasting speaker that gets loud and can add a matching subwoofer, with a 30 hour battery. Its bass reaches about 56Hz before falling 10dB, against 70Hz for the Ultimate Ears Megaboom 3. Alan Ross Reviews measured it at 106dB at full volume, against 98dB for the Ultimate Ears Megaboom 3. It is rated for 30 hours of battery against 20 for the Ultimate Ears Megaboom 3. The catch: Calls itself splash resistant and has no official water rating.
The Ultimate Ears Megaboom 3 is the tougher option. A tough waterproof speaker that floats and shrugs off drops, with a long 20 hour battery for beach and pool days. It is rated IPX7 against Splash resistant for the Minirig 4. Watch for: Not stereo, barely any bass.
Buy the Minirig 4. It is rated higher for sound quality, and the $37.96 you would save on the Ultimate Ears Megaboom 3 does not close the gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A small, long lasting speaker that gets loud and can add a matching subwoofer, with a 30 hour battery.
A tough waterproof speaker that floats and shrugs off drops, with a long 20 hour battery for beach and pool days.
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 | Ultimate Ears Megaboom 3 | |
|---|---|---|
| Price | $229.95 | $191.99 |
| Ranked | #7 of 177 in Medium Size Portable Bluetooth Speakers | #107 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (UE | BOOM app) |
| Aux Input | Yes | No |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 56Hz | 70Hz |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| EQ | Yes | Yes (App EQ) |
| IP Rating | Splash resistant | IPX7 |
| Bluetooth Latency | 60ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 98dB (measured by Alan Ross Reviews) |
| Power Bank | Yes (USB-C) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | Pointing up | Yes |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 1.2 lbs (550 g) | 2 lbs (925 g) |
| Bluetooth Version | 5.0 | 4.2 |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) |
| Drivers | 70mm custom driver | 2x 50mm fullrange |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 50W | - |
| Built-in Microphone | Yes | - |
| Digital Aux Input | No | No |
| Party Mode | - | Yes (PartyUp up to 50 speakers) |
| Strap | - | Yes (built-in loop) |
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