Short answer: the Minirig Mini 2. It ranks #3 of 62 small speakers by sound quality, rated 4.4/5, at $100. The JBL Go 4 ranks #30, rated 3.2/5, at $49.95, $50.05 cheaper, which does not close the gap in sound quality.
The Minirig Mini 2 is the better-sounding, deeper-bass choice. A tiny, very neutral speaker with much deeper bass than most its size, a long battery, and an optional add on subwoofer. Its bass reaches about 58Hz before falling 10dB, against 82Hz for the JBL Go 4. It is rated for 12 hours of battery against 7 for the JBL Go 4. It supports aptX Bluetooth, which the JBL Go 4 lacks. The tradeoff: Calls itself splash resistant and has no official water rating.
The JBL Go 4 is the lighter, tougher option. A pocket sized waterproof mini speaker with a loop for hanging and app EQ. At 0.4 lbs (190 g) it weighs much less than the Minirig Mini 2 at 0.7 lbs (320 g). It is rated IP67 against Splash resistant for the Minirig Mini 2. It links with other speakers (Auracast), which the Minirig Mini 2 cannot. Watch for: Not much bass at all, especially with electronic/bass-heavy tracks pushed past ~50% volume.
Buy the Minirig Mini 2. It is rated higher for sound quality, and saving $50.05 with the JBL Go 4 does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Minirig Mini 2 | JBL Go 4 | |
|---|---|---|
| Price | $100 | $49.95 |
| Ranked | #3 of 62 in Small Size Portable Bluetooth Speakers | #30 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 58Hz | ~82Hz |
| Battery Life | 12 hours (Manufacturer specified) | 7 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | aptX, AAC, SBC | SBC |
| EQ | Yes | Yes |
| IP Rating | Splash resistant | IP67 |
| Maximum SPL | 92dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Auracast) |
| Power Bank | No | No |
| Power Input | Proprietary USB cable | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 0.7 lbs (320 g) | 0.4 lbs (190 g) |
| Built-in Microphone | Yes | Yes |
| Dimensions | 3.3” x 2.1” (84 x 53 mm) | 3.7” x 3” x 1.7” (94.3 x 75.7 x 42.2 mm) |
| Frequency Response | 65Hz - 16kHz (Manufacturer specified) | 90Hz - 20kHz (Manufacturer specified) |
| Drivers | 52mm custom neodymium | 45mm |
| Charging Time | 2.5-3.5 hours | 3 hours |
| Amplifier Power | 15W | 4.2W |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| Strap | - | Yes (built-in loop) |
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