Short answer: the Minirig 4. It ranks #7 of 179 medium speakers by sound quality (rated 4.3/5) at $229.95 and is still sold new; the Bogasing M4 ranks #28 (rated 4.0/5) and is discontinued, so it is only an option used. The Bogasing M4’s replacement, the Bogasing M5, is rated 3.5/5 at $52.99.
Buy the Minirig 4. It is rated higher for sound quality and still sold new, while the Bogasing M4 is discontinued.
There is a real gap in water resistance: the Bogasing M4 at IPX7 (brief submersion) against the Minirig 4, which has Splash resistant (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Bogasing M4 | Minirig 4 | |
|---|---|---|
| Price | $45.99 Discontinued | $229.95 |
| Ranked | #28 of 179 in Medium Size Portable Bluetooth Speakers | #7 of 179 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 54Hz | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| EQ | No | Yes |
| IP Rating | IPX7 | Splash resistant |
| Bluetooth Latency | 150ms | 60ms |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes (Bluetooth or cable) |
| Weight | 1.6 lbs (731 g) | 1.2 lbs (550 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Amplifier Power | 40W | 50W |
| Drivers | 52mm speaker unit | 70mm custom driver |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Dimensions | 3.1”H x 8.4”W x 2.5”D (80 x 214 x 63 mm) | 4” x 2.9” (101.6 x 73 mm) (diameter x height) |
| Aux Latency | - | 0ms |
| Power Bank | - | Yes (USB-C) |
| Frequency Response | - | 60Hz - 18kHz (Manufacturer specified) |
| Built-in Microphone | - | Yes |
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