Short answer: the Minirig 4. It ranks #7 of 177 medium speakers by sound quality, rated 4.3/5, at $229.95. The Soundcore Boom 3i ranks #31, rated 4.0/5, at $118.99, $110.96 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Soundcore Boom 3i is the tougher option. A warm, punchy waterproof speaker that sounds great and is a strong value. It is rated IP68 against Splash resistant for the Minirig 4. The catch: Not quite as good as a JBL Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close.
The Minirig 4 is the longer-running, lighter choice. 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 16 for the Soundcore Boom 3i. At 1.2 lbs (550 g) it weighs noticeably less than the Soundcore Boom 3i at 1.7 lbs (783 g). It keeps a wired aux input, which the Soundcore Boom 3i lacks. Watch for: Calls itself splash resistant and has no official water rating.
Buy the Minirig 4. It is rated higher for sound quality, and saving $110.96 with the Soundcore Boom 3i does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
A warm, punchy waterproof speaker that sounds great and is a strong value.
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
| Soundcore Boom 3i | Minirig 4 | |
|---|---|---|
| Price | $118.99 | $229.95 |
| Ranked | #31 of 177 in Medium Size Portable Bluetooth Speakers | #7 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 56Hz | 56Hz |
| Battery Life | 16 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| EQ | Yes | Yes |
| IP Rating | IP68 | Splash resistant |
| Party Mode | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes (Bluetooth or cable) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) | 4” x 2.9” (101.6 x 73 mm) (diameter x height) |
| Drivers | 94mm woofer + tweeter | 70mm custom driver |
| Weight | 1.7 lbs (783 g) | 1.2 lbs (550 g) |
| Amplifier Power | 50W | 50W |
| Bluetooth Codecs | SBC, AAC | AAC, SBC |
| Built-in Microphone | Yes | Yes |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | - |
| Aux Latency | - | 0ms |
| Bluetooth Latency | - | 60ms |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| Power Bank | - | Yes (USB-C) |
| Frequency Response | - | 60Hz - 18kHz (Manufacturer specified) |
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