Short answer: the Minirig 4 on measured sound quality, the Ultimate Ears Megaboom 4 on price. The Minirig 4 ranks #6 of 142 medium speakers at $229.95. The Ultimate Ears Megaboom 4 ranks #137 at $200, $29.95 cheaper.
What the Ultimate Ears Megaboom 4 offers: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together. Watch for: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
What the Minirig 4 offers: Modular, can easily attach a subwoofer. Finally USB-C charging. Dynamically changes sound based on forward facing or upward facing orientation Watch for: Calls itself splash resistant and has no official water rating. App is buggy. A bit expensive. Has reliability issues more often than any other speaker
Buy the Ultimate Ears Megaboom 4 if the price matters more than sound quality. Buy the Minirig 4 if sound quality matters more than the price.
The Ultimate Ears Megaboom 4 is not a sound-quality pick. It sits near the bottom of the 142 medium speakers; there are better options higher up.
There is a real battery-life gap here: the Minirig 4 is rated for 30 hours, the Ultimate Ears Megaboom 4 only 20 hours.
There is a real gap in water resistance: the Ultimate Ears Megaboom 4 at IP67 (brief submersion) against the Minirig 4, which has Splash resistant (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Megaboom 4 | Minirig 4 | |
|---|---|---|
| Price | $200 | $229.95 |
| Ranked | #137 of 142 in Medium Size Portable Bluetooth Speakers | #6 of 142 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 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 | - | Yes |
| Aux Latency | - | 0ms |
| Bass Extension (-10dB) | - | 56Hz |
| Bluetooth Latency | - | 60ms |
| Power Bank | - | Yes (USB-C) |
| Frequency Response | - | 60Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | - | 50W |
Related Speaker Comparisons
More worthwhile head-to-heads for Minirig 4:
- Earfun Uboom L vs Minirig 4
- Minirig 4 vs Soundcore Motion 300
- Minirig 4 vs Soundcore Motion+
- Minirig 4 vs Soundcore Boost “upgraded” 2021
- Denon Envaya DSB-250BT vs Minirig 4
Prices on this page were last checked September 16, 2026 at 12:41 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Ultimate Ears Megaboom 4: $200 Amazon eBay
Pros: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together.
Cons: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
Full Ultimate Ears Megaboom 4 review and specifications →
| App | Yes |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 3.4" x 3.4" x 8.9" (87 x 87 x 225 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Megaboom 4 vs Doss Soundbox
- Ultimate Ears Megaboom 4 vs Doss Soundbox Pro
- Ultimate Ears Megaboom 4 vs Zealot S61
- Ultimate Ears Megaboom 4 vs Skullcandy Terrain
- Ultimate Ears Megaboom 4 vs Beats Pill+
- Ultimate Ears Megaboom 4 vs Walla Sound
- Ultimate Ears Megaboom 4 vs Ultimate Ears Roll 2
- Ultimate Ears Megaboom 4 vs Xdobo X8
- See all 93 comparisons
Minirig 4: $229.95 Amazon eBay
Pros: Modular, can easily attach a subwoofer. Finally USB-C charging. Dynamically changes sound based on forward facing or upward facing orientation. Measured bass extension of 56Hz (-10dB).
Cons: Calls itself splash resistant and has no official water rating. App is buggy. A bit expensive. Has reliability issues more often than any other speaker
Full Minirig 4 review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Latency | 60ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4" x 2.9" (101.6 x 73 mm) (diameter x height) |
| Drivers | 70mm custom driver |
| EQ | Yes |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) |
| IP Rating | Splash resistant |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | Pointing up |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes (Bluetooth or cable) |
| Weight | 1.2 lbs (550 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons