Short answer: the Harman Kardon Citation 200 for bass, the EarFun Uboom X once you fix the EQ. The Citation 200 digs deeper than any Onyx and costs $130 against $159.99, but it is overly boomy by default unless you short press the Bluetooth and volume down buttons together to cut bass. The Uboom X is the Oluv-tuned pick, though its out-of-the-box 0.33 firmware and EQ sound horrible.
One note: the EarFun Uboom X is no longer sold new, but at #1 of 113 boombox speakers by sound quality it still outranks most current models, so used is worth considering.
Buy the EarFun Uboom X ($159.99) for a boombox speaker; the Harman Kardon Citation 200 ($130) suits a large speaker instead.
There is a real battery-life gap here: the EarFun Uboom X is rated for 30 hours, the Harman Kardon Citation 200 only 8 hours.
Water resistance is not close: the EarFun Uboom X is rated at IP67 (brief submersion), well ahead of the Harman Kardon Citation 200 at IPX4 (splashing).
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| EarFun Uboom X | Harman Kardon Citation 200 | |
|---|---|---|
| Price | $159.99 Discontinued | $130 Discontinued |
| Ranked | #1 of 113 in Boombox Size Portable Bluetooth Speakers | #13 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes (Harman Kardon app) |
| Aux Input | Yes | No |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (App EQ) | No |
| IP Rating | IP67 | IPX4 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| TWS | Yes | No |
| Weight | 9 lbs (4.1 kg) | 6.3 lbs (2.85 kg) |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| USB Playback | No | No |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 4.2 |
| Amplifier Power | 80W | 50W |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) | 7” x 8.6” x 6.8” (178 x 219 x 172 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters | 5” woofer, 1” tweeter |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable shoulder strap) | - |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Google Assistant |
| Frequency Response | - | 40Hz - 20kHz (Manufacturer specified) |
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