Short answer: the Harman Kardon Onyx Studio 7. It ranks #14 of 98 boombox speakers by sound quality, rated 4.1/5, at $248.90. The W-King X10 ranks #86, rated 2.3/5, at $80, $168.90 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Harman Kardon Onyx Studio 7 is the better-sounding, deeper-bass choice. The addition of dual tweeters gives the Studio 7 a wider, more spacious presentation than older Onyx models. Its bass reaches about 37Hz before falling 10dB, against 52Hz for the W-King X10. It links with other speakers (Wireless Dual Sound), which the W-King X10 cannot. Watch for: Consumer Reports finds the bass prominent and boomy, mids hazy, treble slightly smeared and the soundstage congested.
The W-King X10 is the louder, longer-running choice. Alan Ross Reviews measured it at 106dB at full volume, against 96dB for the Harman Kardon Onyx Studio 7. It is rated for 42 hours of battery against 8 for the Harman Kardon Onyx Studio 7. It is rated IPX6, while the Harman Kardon Onyx Studio 7 has no water resistance. The tradeoff: Heavily rolled off treble, less bass than the top ranked.
Buy the Harman Kardon Onyx Studio 7. It is rated higher for sound quality, and saving $168.90 with the W-King X10 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 7 | W-King X10 | |
|---|---|---|
| Price | $248.90 | $80 |
| Ranked | #14 of 98 in Boombox Size Portable Bluetooth Speakers | #86 of 98 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 37Hz | 52Hz |
| Battery Life | 8 hours (Manufacturer specified) | 42 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| IP Rating | None | IPX6 |
| Bluetooth Latency | 266ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 106dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Wireless Dual Sound) | No |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 6.4 lbs (2.9 kg) | 6.5 lbs (2.95 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (2 modes - Indoor/Outdoor) |
| Power Bank | No | Yes (USB-A) |
| USB Playback | No | Yes |
| Amplifier Power | 50W RMS | 70W RMS (120W peak) |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) | 12.4” x 5.5” x 5.3” (315 x 140 x 135 mm) |
| Drivers | 120mm woofer + 2x 25mm tweeters | 2x 3.66” (93mm) subwoofers + 2x 1.2” (31mm) neodymium tweeters + 3x passive radiators |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.0 |
| Strap | No | Yes (detachable shoulder strap) |
| MicroSD Playback | - | Yes |
| FM Tuner | - | No |
Related Speaker Comparisons
How Harman Kardon Onyx Studio 7 compares with other leading options:
- Tribit Stormbox Blast vs Harman Kardon Onyx Studio 7
- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 7
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 7
- JBL PartyBox On-The-Go 2 Plus vs Harman Kardon Onyx Studio 7
- JBL Partybox Encore Essential 2 vs Harman Kardon Onyx Studio 7
Prices on this page were last checked October 12, 2026 at 4:13 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Harman Kardon Onyx Studio 7: $248.90 Amazon $248.90 eBay
Newer model: the Harman Kardon Onyx Studio 9, ranked lower, rated 4.1/5, released Dec 2024.
Older models: the Harman Kardon Onyx Studio 6 (ranked higher, rated 4.1/5), the Harman Kardon Onyx Studio 5 (ranked lower, rated 3.9/5) and the Harman Kardon Onyx Studio 4 (rated 3.3/5). See every Harman Kardon Onyx Studio generation.
Pros: The addition of dual tweeters gives the Studio 7 a wider, more spacious presentation than older Onyx models. It delivers strong, deep bass, useful large-room volume and can pair with a second Studio 7 for stereo. Measured bass extension of 37Hz (-10dB).
Cons: Consumer Reports finds the bass prominent and boomy, mids hazy, treble slightly smeared and the soundstage congested. Battery life remains only about eight hours, it has no water rating or advanced codecs, and it is not an especially loud outdoor speaker.
Full Harman Kardon Onyx Studio 7 review and specifications →
| Released | Jan 2021 (5 years ago) |
|---|---|
| Amplifier Power | 50W RMS |
| App | No |
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 37Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 266ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) |
| Drivers | 120mm woofer + 2x 25mm tweeters |
| EQ | No |
| IP Rating | None |
| 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/2.1A) |
| Stereo | Partially (1 woofer) |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 6.4 lbs (2.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: JBL Boombox 2 vs Onyx Studio 7 big bass battle 💋 More from alanrossreviews →
- Alan Ross Reviews: Onyx Studio 7 vs Onyx Studio 6 - massive deep bass battle 😁
- Alan Ross Reviews: Harman Kardon Go+ Play 2 mini or Onyx Studio 6 - best speaker for bass?
- Alan Ross Reviews: JBL Boombox 2 bass monster or the mature Harman Kardon Go+ Play 2 mini for bass?? 💥
- Alan Ross Reviews: Ultimate HK Onyx Studio speaker review and comparison! 8 speakers!
- KULAS TECH SHOW: Harman / Kardon Onyx Studio 5 vs Onyx Studio 7 - Close battle🔥🔥 More from KULASTECHSHOW20 →
- KULAS TECH SHOW: Harman Kardon Citation 200 vs Onyx Studio 7 Bass comparison
- Geri’s Collection: Harman Kardon Onyx 7 vs Onyx 4
- Head-to-Head Comparisons
- Harman Kardon Onyx Studio 7 vs Harman Kardon Onyx Studio 6
- Harman Kardon Onyx Studio 7 vs Harman Kardon Onyx Studio 9
- Harman Kardon Onyx Studio 7 vs Harman Kardon Onyx Studio 8
- Harman Kardon Onyx Studio 7 vs Zealot ZE51
- Harman Kardon Onyx Studio 7 vs Zealot ZE41
- Harman Kardon Onyx Studio 7 vs Yeahbox Sonic Boom Ultra
- Harman Kardon Onyx Studio 7 vs Zealot ZE21
- Harman Kardon Onyx Studio 7 vs Zealot S89
- See all 72 comparisons
W-King X10: $80 Amazon $80 AliExpress $80.37 eBay
Pros: 70W RMS output with 120W peak power, exceptional 42-hour battery life, power bank function, IPX6 waterproof, 106dB max volume, EQ with indoor/outdoor modes, dual woofers with tweeters and passive radiators, Bluetooth 5.0 with 100ft range, MicroSD and USB playback, AUX input, TWS stereo pairing. Measured bass extension of 52Hz (-10dB).
Cons: Heavily rolled off treble, less bass than the top ranked.
Full W-King X10 review and specifications →
| Released | May 2021 (5 years ago) |
|---|---|
| Amplifier Power | 70W RMS (120W peak) |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 42 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.4” x 5.5” x 5.3” (315 x 140 x 135 mm) |
| Drivers | 2x 3.66” (93mm) subwoofers + 2x 1.2” (31mm) neodymium tweeters + 3x passive radiators |
| EQ | Yes (2 modes - Indoor/Outdoor) |
| FM Tuner | No |
| IP Rating | IPX6 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 6.5 lbs (2.95 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: W-King X10 (70w) vs Soundcore Motion Boom (30w) - value for money? 🤑 More from alanrossreviews →
- Alan Ross Reviews: W King x10 vs x10-1 - updates, changes, also D9 and Motion Boom!
- Alan Ross Reviews: W-King D10 speaker vs the D8, D9 and X10 WKing speakers 👀
- Alan Ross Reviews: W-King X10 vs JBL Xtreme 3, Xtreme 2 and Xtreme 1! Xtreme Review 🤓
- Jay’s Straight Up Reviews & More: ZEALOT S-67 🦨 75w Bluetooth Speaker Review🤦🏼♂️ & Comparison With W-King X10. More from JaysStraightUpReviews →
- Head-to-Head Comparisons