Short answer: the Harman Kardon Onyx Studio 8. It ranks #10 of 73 boombox speakers by sound quality at $159.99; the JBL Partybox On the Go ranks #44 and costs $300, so there is not much of a tradeoff to weigh.
What the Harman Kardon Onyx Studio 8 offers: Warm sound with boosted bass. Watch for: Not as loud as others. No water rating.
What the JBL Partybox On the Go offers: Included wireless microphone. Watch for: Poor water rating. Horrible battery life. Probably the worst sounding of the Partybox line.
Buy the Harman Kardon Onyx Studio 8. It ranks higher for sound quality than the JBL Partybox On the Go and costs less, so the other one has nothing left to offer.
Water resistance is not close: the JBL Partybox On the Go is rated at IPX4 (splashing), well ahead of the Harman Kardon Onyx Studio 8 at no water resistance.
Specifications Side By Side
| Harman Kardon Onyx Studio 8 | JBL Partybox On the Go | |
|---|---|---|
| Price | $159.99 | $300 |
| Ranked | #10 of 73 in Boombox Size Portable Bluetooth Speakers | #44 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 42ms | - |
| Bass Extension (-10dB) | 35Hz | 49Hz |
| Battery Life | 8 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Built in Microphone | Yes | No |
| IP Rating | None | IPX4 |
| Bluetooth Latency | 175ms | - |
| Max Volume | 96dB | 94dB |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs / 3.3 kg | 16.5 lbs / 7.5 kg |
| App | Yes (Harman Kardon One app) | Yes (JBL PartyBox app) |
| Bluetooth Codecs | SBC | SBC |
| Power Bank | No | Yes (USB-A, 5V/2.1A) |
| EQ | Yes (App EQ) | No |
| Party Mode | No | No |
| USB Playback | No | Yes |
| Bluetooth Version | 5.2 | 4.2 |
| Output Power | 50W RMS | 100W |
| Dimensions | 10.6" x 11.9" x 6.3" (268 x 302.5 x 159.5 mm) | 19.3" x 8.8" x 9.6" (489 x 224 x 244.5 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters | 5.1" woofer + tweeters |
| Digital Aux Input | No | No |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
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- JBL Partybox Encore Essential vs Harman Kardon Onyx Studio 6
- Turtlebox vs Harman Kardon Onyx Studio 6
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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 8: $159.99 Amazon eBay
Pros: Warm sound with boosted bass.
Cons: Not as loud as others. No water rating.
Full Harman Kardon Onyx Studio 8 review and specifications →
| App | Yes (Harman Kardon One app) |
|---|---|
| Aux Input | Yes |
| Aux Latency | 42ms |
| Bass Extension (-10dB) | 35Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 175ms |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.6" x 11.9" x 6.3" (268 x 302.5 x 159.5 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Max Volume | 96dB |
| Omnidirectional | No |
| Output Power | 50W RMS |
| Party Mode | No |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 7.3 lbs / 3.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Harman Kardon Onyx Studio 8 review - part 2 of 3 More from alanrossreviews →
- Alan Ross Reviews: Onyx Studio 8 vs HK Onyx 6, Xtreme 3, PartyBox Encore, Go+ Play, Bag of Riddim! part 3 of 3
- Alan Ross Reviews: Dead room vs Live room - Onyx studio 8 self tuning test! part 1 of 3
- Alan Ross Reviews: Ultimate HK Onyx Studio speaker review and comparison! 8 speakers!
- Reddit Search for Harman Kardon Onyx Studio 8 Review
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- Harman Kardon Onyx Studio 8 vs JBL Partybox Encore Essential
- Harman Kardon Onyx Studio 8 vs JBL Partybox Encore
- Harman Kardon Onyx Studio 8 vs Zealot ZE41
- See all 44 comparisons
JBL Partybox On the Go: $300 Amazon eBay
Pros: Included wireless microphone.
Cons: Poor water rating. Horrible battery life. Probably the worst sounding of the Partybox line.
Full JBL Partybox On the Go review and specifications →
| App | Yes (JBL PartyBox app) |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.3" x 8.8" x 9.6" (489 x 224 x 244.5 mm) |
| Drivers | 5.1" woofer + tweeters |
| EQ | No |
| IP Rating | IPX4 |
| Max Volume | 94dB |
| Omnidirectional | No |
| Output Power | 100W |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Partially |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.5 lbs / 7.5 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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