Short answer: the Zealot S95 for value, the Harman Kardon Onyx Studio 5 for the design. The S95 is a good value for the boombox class, but it is a little rolled off up top and not that balanced through the rest of the range. The Onyx Studio 5 offers the elegant circular design with carrying handle, though it is warm with boosted bass, at $499.99 against $157.41.
Buy the Zealot S95 if you want one new; the Harman Kardon Onyx Studio 5 is discontinued, so only look for it used.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 5 | Zealot S95 | |
|---|---|---|
| Price | $499.99 Discontinued | $157.41 |
| Ranked | #24 of 90 in Boombox Size Portable Bluetooth Speakers | #34 of 90 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 8 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX6 |
| Party Mode | Yes (Wireless Dual Sound) | Yes (PartyAdd up to 100 speakers) |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Partially (1 woofer) | 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 | 6.6 lbs (3 kg) | 11.3 lbs (5.11 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| Power Bank | No | Yes (USB-A, 5V/2A) |
| USB Playback | No | Yes |
| Built-in Microphone | Yes | No |
| Amplifier Power | 50W | 120W |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) | 14.1” x 9.6” x 6.6” (358 x 243 x 167 mm) |
| Drivers | 120mm woofer + 25mm tweeter + 2x passive radiators | 130W subwoofer + dual drivers |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| Strap | No | - |
| Bass Extension (-10dB) | - | 45Hz |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
More top alternatives to Harman Kardon Onyx Studio 5:
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- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 5
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 5
- JBL Partybox Encore Essential 2 vs Harman Kardon Onyx Studio 5
- JBL Partybox Encore vs Harman Kardon Onyx Studio 5
Prices on this page were last checked October 2, 2026 at 10:18 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 5: $499.99 Discontinued Amazon eBay
Newer model: the Harman Kardon Onyx Studio 9, ranked higher, rated 4.1/5.
Pros: The iconic circular cabinet and integrated handle make it an attractive room-to-room speaker. Reviews praise its generous bass, balanced mids and smooth top end at moderate levels, giving it a warm, relaxed presentation for casual indoor music.
Cons: The large bass boost can mask lower-mid detail and make dense mixes muddy. Battery life is only around eight hours at moderate volume, it is not especially loud, and it has no water resistance for outdoor use. Discontinued.
Full Harman Kardon Onyx Studio 5 review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No |
| 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 | 11.3” x 11.3” (285.8 x 285.8 mm) |
| Drivers | 120mm woofer + 25mm tweeter + 2x passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Partially (1 woofer) |
| Strap | No |
| 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 | 6.6 lbs (3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Zealot S95: $157.41 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. Measured bass extension of 45Hz (-10dB).
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 →
| Amplifier Power | 120W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| 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 |
| 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
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