Short answer: the Minirig 4. It ranks #6 of 150 medium speakers by sound quality, rated 4.3/5, at $229.95. The Ultimate Ears Wonderboom 4 ranks #95, rated 2.9/5, at $59.99, $169.96 cheaper, which does not close the gap in sound quality.
The Ultimate Ears Wonderboom 4 is the lighter, tougher pick. At 0.9 lbs (420 g) it weighs noticeably less than the Minirig 4 at 1.2 lbs (550 g). It is rated IP67 against Splash resistant for the Minirig 4. The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
The Minirig 4 is the better-sounding, longer-running choice. Modular, can easily attach a subwoofer. It is rated for 30 hours of battery against 14 for the Ultimate Ears Wonderboom 4. It supports AAC Bluetooth, which the Ultimate Ears Wonderboom 4 lacks. It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. The catch: Calls itself splash resistant and has no official water rating.
Buy the Minirig 4. It is rated higher for sound quality, and the $169.96 saving on the Ultimate Ears Wonderboom 4 is not enough to make up the difference.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Wonderboom 4 | Minirig 4 | |
|---|---|---|
| Price | $59.99 | $229.95 |
| Ranked | #95 of 150 in Medium Size Portable Bluetooth Speakers | #6 of 150 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | 106dB (measured by Alan Ross Reviews) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Yes | Pointing up |
| Weight | 0.9 lbs (420 g) | 1.2 lbs (550 g) |
| IP Rating | IP67 | Splash resistant |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 4” x 2.9” (101.6 x 73 mm) (diameter x height) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 70mm custom driver |
| TWS | Yes | Yes (Bluetooth or cable) |
| Party Mode | No | - |
| App | No | Yes |
| EQ | No | Yes |
| Built-in Microphone | No | Yes |
| Power Bank | No | Yes (USB-C) |
| Aux Input | No | Yes |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | AAC, SBC |
| Strap | Yes (built-in loop) | - |
| Aux Latency | - | 0ms |
| Bass Extension (-10dB) | - | 56Hz |
| Bluetooth Latency | - | 60ms |
| Frequency Response | - | 60Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | - | 50W |
Related Speaker Comparisons
How Minirig 4 compares with other leading options:
- 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 30, 2026 at 2:57 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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The Two Speakers In Full
Ultimate Ears Wonderboom 4: $59.99 Amazon eBay
Older models: the Ultimate Ears Wonderboom 3 (ranked lower, rated 2.9/5), the Ultimate Ears Wonderboom 2 (ranked lower, rated 2.9/5) and the Ultimate Ears Wonderboom (ranked lower, rated 2.9/5).
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Megaboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Wonderboom 4 vs LG Xboom Grab
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Wonderboom 4 vs Soundcore 2
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- See all 132 comparisons
Minirig 4: $229.95 Amazon eBay
Older models: the Minirig 3 (ranked lower, rated 4.3/5) and the Minirig 2 (ranked lower, rated 4.3/5).
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 | Yes |
| 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