Short answer: the Soundcore Motion Boom for value, the Harman Kardon Citation 200 for bass. The Motion Boom costs $109.99 and delivers 30W of loud, bass-heavy sound, though it is not as neutral or detailed as the top-ranked speakers. The Citation 200 ranks #13 of 120 and digs deeper than any Onyx, but it is overly boomy by default.

Buy the Harman Kardon Citation 200 or the Soundcore Motion Boom, whichever you find used in better condition; both are discontinued. For a new speaker, buy the Soundcore Boom 2, which replaces the Soundcore Motion Boom.
If battery life is a priority, the Soundcore Motion Boom is rated for 24 hours versus 8 hours for the Harman Kardon Citation 200.
There is a real gap in water resistance: the Soundcore Motion Boom at IPX7 (brief submersion) against the Harman Kardon Citation 200, which has IPX4 (splashing).
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Harman Kardon Citation 200 | Soundcore Motion Boom | |
|---|---|---|
| Price | $130 Discontinued | $109.99 Discontinued |
| Ranked | #13 of 120 in Large Size Portable Bluetooth Speakers | #14 of 120 in Large Size Portable Bluetooth Speakers |
| Aux Input | No | No |
| Battery Life | 8 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX4 | IPX7 |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| Weight | 6.3 lbs (2.85 kg) | 3.3 lbs (1.5 kg) |
| Wi-Fi | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | Yes (Harman Kardon app) | Yes |
| EQ | No | Yes |
| TWS | No | Yes |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-A) |
| USB Playback | No | - |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Google Assistant | - |
| Power Input | USB-C | USB-C |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 7” x 8.6” x 6.8” (178 x 219 x 172 mm) | 13.6” x 7.9” x 5.8” (346 x 200 x 148 mm) |
| Drivers | 5” woofer, 1” tweeter | 2x 63.5mm titanium fullrange drivers + 2x passive radiators |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 50W | 30W |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 53Hz |
| Bluetooth Latency | - | 170ms |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
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