Short answer: the EarFun Uboom X, unless you need the JBL Boombox 4’s output. The Boombox 4 delivers pretty insane output capability for its size but is pretty overpriced for the category at $549.95. The Oluv-tuned Uboom X at $159.99 is the value pick, once the horrible out-of-the-box 0.33 firmware and EQ are dealt with.
Buy the JBL Boombox 4, since the EarFun Uboom X is discontinued and only worth hunting down used.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| EarFun Uboom X | JBL Boombox 4 | |
|---|---|---|
| Price | $159.99 Discontinued | $549.95 |
| Ranked | #1 of 113 in Boombox Size Portable Bluetooth Speakers | #20 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes |
| Aux Input | Yes | No |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | 41Hz |
| Battery Life | 30 hours (Manufacturer specified) | 28 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC, LC3, AAC |
| Built-in Microphone | Yes | No |
| EQ | Yes (App EQ) | Yes (7 band) |
| IP Rating | IP67 | IP68 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | AAC 144ms, SBC 48ms |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | 115dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | Yes (Auracast) |
| Power Bank | Yes (USB-C) | Yes (USB-C, up to 30W) |
| Power Input | USB-C | AC Power cord |
| TWS | Yes | Yes |
| Weight | 9 lbs (4.1 kg) | 13.2 lbs (5.98 kg) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| USB Playback | No | No |
| FM Tuner | No | No |
| Bluetooth Version | 5.3 | 5.4 |
| Amplifier Power | 80W | 210W AC / 200W battery |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) | 20.1” x 10.2” x 8.3” (510 x 260 x 210 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters | 2x 123mm woofers + 2x 20mm tweeters with passive radiators |
| Digital Aux Input | No | Yes (USB-C) |
| Lights | Yes | - |
| Strap | Yes (detachable shoulder strap) | No |
| Removable Battery | - | Yes |
| Microphone Input | - | No |
| MicroSD Playback | - | No |
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