Short answer: the Soundcore Boom Go 3i. It ranks #2 of 62 small speakers by sound quality, rated 4.4/5, at $59.98. The Xiaomi Mi Portable Mini ranks #51, rated 2.6/5, at $21.99, $37.99 cheaper, which does not close the gap in sound quality.
The Soundcore Boom Go 3i is the better-sounding, longer-running pick. A tough, floating mini speaker with full waterproofing, a long battery and a detachable strap, built for travel and the outdoors. It is rated for 24 hours of battery against 10 for the Xiaomi Mi Portable Mini. It links with other speakers (Auracast), which the Xiaomi Mi Portable Mini cannot. It has an adjustable EQ, which the Xiaomi Mi Portable Mini lacks. The tradeoff: This is still a 15W mono speaker: bass impact and stereo width are limited, and critical listeners may find the upper treble piercing or metallic.
The Xiaomi Mi Portable Mini is the lighter choice. A tiny, very cheap waterproof speaker with USB-C charging and stereo pairing with a second unit, easy to slip into any bag. At 0.4 lbs (185 g) it weighs much less than the Soundcore Boom Go 3i at 0.8 lbs (380 g). The tradeoff: Not much bass, treble rolled off.
Buy the Soundcore Boom Go 3i. It is rated higher for sound quality, and the $37.99 saving on the Xiaomi Mi Portable Mini is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 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.
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Specifications Side By Side
| Soundcore Boom Go 3i | Xiaomi Mi Portable Mini | |
|---|---|---|
| Price | $59.98 | $21.99 |
| Ranked | #2 of 62 in Small Size Portable Bluetooth Speakers | #51 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP68 | IP67 |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes | Yes |
| Weight | 0.8 lbs (380 g) | 0.4 lbs (185 g) |
| Bluetooth Version | 6.0 | 5.0 |
| Amplifier Power | 15W | 4W |
| Dimensions | 4” x 4.2” x 1.8” (102.1 x 105.9 x 45.5 mm) | 3.4” x 3.4” x 1.8” (86 x 86 x 45 mm) |
| Drivers | 25mm tweeter + 42mm woofer + passive radiators | 2x drivers (rare-earth magnet, long-fibre diaphragm) + passive radiator |
| Maximum SPL | 92dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | - |
| Battery Capacity | - | 2000mAh |
| Frequency Response | - | 200Hz - 15kHz (Manufacturer specified) |
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