Short answer: the Harman Kardon Onyx Studio 6. It ranks #12 of 75 boombox speakers by sound quality at $130; the B&O Beolit 20 ranks #33 and costs $599.99, so there is not much of a tradeoff to weigh.
What the Harman Kardon Onyx Studio 6 offers: Harman Kardon Onyx Studio 6 uses 2x 75mm woofers + 2x 20mm tweeters. Its 2.94 kg, claimed 8 hours (Manufacturer specified) battery life, IPX7 protection, aux input, up to 96dB and stereo playback make it a practical option for its intended room or portable use. Watch for: Bass is limited by its 37Hz specification. There is no companion app. No EQ adjustment.
What the B&O Beolit 20 offers: B&O Beolit 20 uses 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators. Its 2.7 kg, claimed 8 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 93dB and mono playback make it a practical option for its intended room or portable use. Watch for: Bass is limited by its 45Hz specification.
Buy the Harman Kardon Onyx Studio 6. It ranks higher for sound quality than the B&O Beolit 20 and costs less, so the other one has nothing left to offer.
If water resistance matters to you, the Harman Kardon Onyx Studio 6 at IPX7 (brief submersion) holds up far better than the B&O Beolit 20 at IPX4 (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Harman Kardon Onyx Studio 6 | B&O Beolit 20 | |
|---|---|---|
| Price | $130 | $599.99 |
| Ranked | #12 of 75 in Boombox Size Portable Bluetooth Speakers | #33 of 75 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 37Hz | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| IP Rating | IPX7 | IPX4 |
| Bluetooth Latency | 180ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 93dB (Manufacturer specified) |
| Party Mode | Yes (Wireless Dual Sound) | No |
| Power Input | DC Barrel Connector (19V/2A) | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) | Yes |
| Weight | 6.5 lbs (2.94 kg) | 6 lbs (2.7 kg) |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes (Bang & Olufsen app) |
| EQ | No | Yes (App EQ) |
| Power Bank | No | Yes (USB-C) |
| USB Playback | No | No |
| Bluetooth Version | 4.2 | - |
| Amplifier Power | 50W RMS | 240W peak |
| Dimensions | 5" x 11.5" x 11.2" (128 x 291 x 284 mm) | 5.3" x 9.1" x 7.4" (135 x 230 x 189 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters | 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators |
| Digital Aux Input | No | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Harman Kardon Onyx Studio 6:
- Tribit Stormbox Blast vs Harman Kardon Onyx Studio 6
- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 6
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 6
- JBL Partybox Encore Essential 2 vs Harman Kardon Onyx Studio 6
- JBL Partybox Encore vs Harman Kardon Onyx Studio 6
Prices on this page were last checked September 16, 2026 at 12:41 AM 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 6: $130 Amazon eBay
Pros: Harman Kardon Onyx Studio 6 uses 2x 75mm woofers + 2x 20mm tweeters. Its 2.94 kg, claimed 8 hours (Manufacturer specified) battery life, IPX7 protection, aux input, up to 96dB and stereo playback make it a practical option for its intended room or portable use. Measured bass extension of 37Hz (-10dB).
Cons: Bass is limited by its 37Hz specification. There is no companion app. No EQ adjustment.
Full Harman Kardon Onyx Studio 6 review and specifications →
| Amplifier Power | 50W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 37Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 180ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 5" x 11.5" x 11.2" (128 x 291 x 284 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | IPX7 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2A) |
| Stereo | Yes |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| USB Playback | No |
| Weight | 6.5 lbs (2.94 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Onyx Studio 7 vs Onyx Studio 6 - massive deep bass battle 😁 More from alanrossreviews →
- That Speaker Guy: Harman Kardon Onyx Studio 6 vs Devialet Mania
- Ezekielo: Citation 200 vs Onyx Studio 6 vs Bose Portable Speaker Sound Comparison
- Alan Ross Reviews: Harman Kardon Go+ Play 2 mini or Onyx Studio 6 - best speaker for bass?
- Alan Ross Reviews: Ultimate HK Onyx Studio speaker review and comparison! 8 speakers!
- Head-to-Head Comparisons
- Harman Kardon Onyx Studio 6 vs Harman Kardon Onyx Studio 8
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- Harman Kardon Onyx Studio 6 vs Yeahbox Sonic Boom Ultra
- Harman Kardon Onyx Studio 6 vs Vifa Copenhagen 2.0
- Harman Kardon Onyx Studio 6 vs Zealot ZE51
- Harman Kardon Onyx Studio 6 vs Zealot ZE41
- Harman Kardon Onyx Studio 6 vs JBL Partybox Encore Essential
- See all 57 comparisons
B&O Beolit 20: $599.99 Amazon eBay
Pros: B&O Beolit 20 uses 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators. Its 2.7 kg, claimed 8 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 93dB and mono playback make it a practical option for its intended room or portable use. Measured bass extension of 45Hz (-10dB).
Cons: Bass is limited by its 45Hz specification.
Full B&O Beolit 20 review and specifications →
| Amplifier Power | 240W peak |
|---|---|
| App | Yes (Bang & Olufsen app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 5.3" x 9.1" x 7.4" (135 x 230 x 189 mm) |
| Drivers | 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators |
| EQ | Yes (App EQ) |
| IP Rating | IPX4 |
| Maximum SPL | 93dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 6 lbs (2.7 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: B&O Beolit 20 vs Earfun UBoom X - everything fake? More from Oluv’Sone →
- Joy & Oluv’Sone: $600 premium Bluetooth speaker vs $115 cheapo UBoom X
- techkiste.net: B&O Beolit 20 vs Vifa Copenhagen 2.0 sound-comparison with different music-genres
- Oluv Patreon: B&O Beolit 20 - frequency response measurements
- Head-to-Head Comparisons