Short answer: the EarFun Uboom L for sound, the Bogasing M4 on price. The Uboom L was tuned by Oluv and he knocked it out of the park, but latency is high at 400ms unless low latency mode is on, and that mode does not work when two speakers are TWS paired; it costs $49.79 against the M4’s $45.99. The M4 sounds most balanced in super bass mode but is a bit harsh and thin. The Bogasing M4 is discontinued; its replacement is the Bogasing M5.
Buy the EarFun Uboom L. It is rated higher for sound quality, and the Bogasing M4 is discontinued, so it is only available used.
Battery life favors the Bogasing M4: rated for 24 hours against 16 hours for the EarFun Uboom L.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Bogasing M4 | EarFun Uboom L | |
|---|---|---|
| Price | $45.99 Discontinued | $49.79 after coupon UBOOMLWC |
| Ranked | #28 of 179 in Medium Size Portable Bluetooth Speakers | #2 of 179 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (firmware >= 1.2.6) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 54Hz | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | No | Yes (10 band, firmware >= 1.2.6) |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 150ms | 400ms normal / 66ms low latency mode |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | 103dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.6 lbs (731 g) | 1.4 lbs (650 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Amplifier Power | 40W | 28W |
| Drivers | 52mm speaker unit | 2x 55mm drivers + 2x passive radiators |
| 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) | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) |
| Aux Latency | - | 216ms |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
| Power Bank | - | No |
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