Short answer: the Harman Kardon Onyx Studio 4 for sound and value, the B&O Beosound Level for design. The Onyx Studio 4 delivers balanced sound with deep resonant bass, crisp treble and a large dynamic range, though its 8 hour battery and loudness trail others. The Beosound Level is a premium Scandinavian design piece, but its bass is not very deep, it peaks in the midrange and it is hugely expensive at $2,250 against $100.
Buy the B&O Beosound Level new; the Harman Kardon Onyx Studio 4 is no longer sold new, so it only makes sense as a used find.
Battery life favors the B&O Beosound Level: rated for 16 hours against 8 hours for the Harman Kardon Onyx Studio 4.
If water resistance matters to you, the B&O Beosound Level at IP54 (splashing) holds up far better than the Harman Kardon Onyx Studio 4 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 4 | B&O Beosound Level | |
|---|---|---|
| Price | $100 Discontinued | $2,250.00 |
| Ranked | #61 of 97 in Large Size Portable Bluetooth Speakers | #79 of 97 in Large Size Portable Bluetooth Speakers |
| App | Yes (HK Connect) | No |
| Aux Input | Yes | Yes |
| Battery Life | 8 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | None | IP54 |
| Party Mode | Yes (Connect+ up to 100 speakers) | No |
| Power Bank | No | No |
| TWS | Yes | Yes |
| Weight | 4.5 lbs (2.06 kg) | 7.3 lbs (3.3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 4.2 | 5.0 |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters + 1x passive radiator | 2x 102mm woofers, 1x 51mm fullrange, 2x 20mm tweeters |
| Dimensions | 11.4” x 11.4” x 5.1” (290 x 290 x 130 mm) | 13.7” x 9.1” x 2.2” (348 x 230 x 56 mm) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 39Hz - 23kHz (Manufacturer specified) |
| Amplifier Power | 60W | 105W |
| Digital Aux Input | No | No |
| Strap | No | - |
| Bass Extension (-10dB) | - | ~60Hz |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Google Assistant |
| Maximum SPL | - | 96dB (Manufacturer specified) |
Related Speaker Comparisons
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Prices on this page were last checked October 3, 2026 at 10:26 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Harman Kardon Onyx Studio 4: $100 Discontinued eBay
Newer model: the Harman Kardon Onyx Studio 9, rated 4.1/5.
Pros: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. Multi-host Bluetooth connectivity for 2 phones, daisy chaining up to 100 speakers. Elegant modern design with smooth curves and premium materials.
Cons: 8 hour battery at medium volume. Not at loud as others. Not as deep of bass as the newer Onyx. External AC power brick for charging. Discontinued.
Full Harman Kardon Onyx Studio 4 review and specifications →
| Amplifier Power | 60W |
|---|---|
| App | Yes (HK Connect) |
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.4” x 11.4” x 5.1” (290 x 290 x 130 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters + 1x passive radiator |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 4.5 lbs (2.06 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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B&O Beosound Level: $2,250.00 Amazon eBay
Pros: Premium Scandinavian design with elegant domestic sculpture aesthetic. Battery, WiFi, and Bluetooth enable AC/portable use, upright/flat/wall-mount positioning. Modular design with upgradeable wireless module, sound processing, and battery. 16-hour battery with quick-connect Mag-Safe rear charging puck. 105W output. Measured bass extension of ~60Hz (-10dB).
Cons: Not very deep bass, peaks in midrange. Hugely expensive.
Full B&O Beosound Level review and specifications →
| Amplifier Power | 105W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~60Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.7” x 9.1” x 2.2” (348 x 230 x 56 mm) |
| Drivers | 2x 102mm woofers, 1x 51mm fullrange, 2x 20mm tweeters |
| EQ | No |
| Frequency Response | 39Hz - 23kHz (Manufacturer specified) |
| IP Rating | IP54 |
| Maximum SPL | 96dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Voice Assistants | Google Assistant |
| Weight | 7.3 lbs (3.3 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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