Short answer: the Harman Kardon Onyx Studio 6. It ranks #11 of 73 boombox speakers by sound quality at $130; the Zealot S95 ranks #24 and costs $159.41, which makes this an easy call rather than a real tradeoff.
What the Harman Kardon Onyx Studio 6 offers: Warm sound with boosted bass. Oluv liked it slightly better than the newer Onyx 7. Watch for: 8 hour battery at medium volume. Not at loud as others.
What the Zealot S95 offers: A good value for the boombox class. Appears to be the same internals as the ZE01. Bigger case and goes deeper than the ZE01 Watch for: A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers.
Buy the Harman Kardon Onyx Studio 6. It ranks higher for sound quality than the Zealot S95 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Harman Kardon Onyx Studio 6 | Zealot S95 | |
|---|---|---|
| Price | $130 | $159.41 |
| Ranked | #11 of 73 in Boombox Size Portable Bluetooth Speakers | #24 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 37Hz | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built in Microphone | Yes | No |
| IP Rating | IPX7 | IPX6 |
| Bluetooth Latency | 180ms | - |
| Max Volume | 96dB | - |
| Party Mode | Yes (Wireless Dual Sound) | Yes (PartyAdd up to 100 speakers) |
| Power Input | DC Barrel Connector (19V/2A) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| 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 | 11.3 lbs / 5.11 kg |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| Power Bank | No | Yes (USB-A, 5V/2A) |
| USB Playback | No | Yes |
| Bluetooth Version | 4.2 | - |
| Output Power | 50W RMS | 120W |
| Dimensions | 5" x 11.5" x 11.2" (128 x 291 x 284 mm) | 14.1" x 9.6" x 6.6" (358 x 243 x 167 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters | 130W subwoofer + dual drivers |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
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- Harman Kardon Onyx Studio 8 vs Soundcore Motion Boom+
- Harman Kardon Onyx Studio 8 vs W-King X10-1
- Harman Kardon Onyx Studio 6 vs Zealot S78
- Harman Kardon Onyx Studio 6 vs Harman Kardon Onyx Studio 8
Prices on this page were last checked August 27, 2026 at 10:09 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 6: $130 Amazon eBay
Pros: Warm sound with boosted bass. Oluv liked it slightly better than the newer Onyx 7.
Cons: 8 hour battery at medium volume. Not at loud as others.
Full Harman Kardon Onyx Studio 6 review and specifications →
| 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 |
| Max Volume | 96dB |
| Omnidirectional | No |
| Output Power | 50W RMS |
| 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!
- Reddit Search for Harman Kardon Onyx Studio 6 Review
- Head-to-Head Comparisons
- Harman Kardon Onyx Studio 6 vs Harman Kardon Onyx Studio 8
- Harman Kardon Onyx Studio 6 vs Harman Kardon Onyx Studio 7
- Harman Kardon Onyx Studio 6 vs Harman Kardon Onyx Studio 9
- Harman Kardon Onyx Studio 6 vs Vifa Copenhagen 2.0
- Harman Kardon Onyx Studio 6 vs Zealot ZE41
- Harman Kardon Onyx Studio 6 vs JBL Partybox Encore Essential
- Harman Kardon Onyx Studio 6 vs Zealot ZE21
- Harman Kardon Onyx Studio 6 vs JBL Partybox Encore
- See all 45 comparisons
Zealot S95: $159.41 Amazon Aliexpress eBay
Pros: A good value for the boombox class. Appears to be the same internals as the ZE01. Bigger case and goes deeper than the ZE01
Cons: A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers.
Full Zealot S95 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 14.1" x 9.6" x 6.6" (358 x 243 x 167 mm) |
| Drivers | 130W subwoofer + dual drivers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 120W |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 11.3 lbs / 5.11 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Jagist reviews: Jbl Boombox 4 Vs Zealot S95!!! More from Jagistreviews →
- Jagist reviews: Zealot S95 Vs Tribit Stormbox Blast 2!!!
- Jagist reviews: Zealot S95 Vs Soundcore Boom 2 Plus!!!
- Jagist reviews: LG xboom Stage 301 Vs Zealot S95!!!
- Techder Audios: W-king X20 VS Zealot S95 DEEP BASS VS DEEPER & LOUDER BASS?! More from techderaudios →
- Reddit Search for Zealot S95 Review
- Head-to-Head Comparisons