Short answer: the Tronsmart Fiitune X30, if you are buying new. The Harman Kardon Onyx Studio 8 ranks higher than it (#12 vs #48 of 89 boombox speakers, 4.1/5 vs 3.3/5) but is discontinued, so only consider it used; the Tronsmart Fiitune X30 is still sold new at $144.90.
What the Harman Kardon Onyx Studio 8 does well: At 3.3 kg, Harman Kardon Onyx Studio 8 combines a 120mm woofer and 2x 20mm tweeters with Bluetooth and aux. The catch: Bass is limited by its 35Hz specification.
Why pick the Tronsmart Fiitune X30: A three-way, six-driver design (racetrack woofer, two midranges, two tweeters and an upward-firing driver) with 80W, Hi-Res certification, LDAC, a claimed 14 hours of battery and IPX6. The tradeoff: Side by side it clearly lost to the Harman Kardon Go + Play 3, the Soundcore Boom 2 and the EarFun UBoom X: listeners described muddy, dark mid-bass that fails to reproduce low notes, dull and underemphasized treble, and a boxy, sterile sound at low volume next to the JBL Xtreme 4.
Buy the Tronsmart Fiitune X30 new; the Harman Kardon Onyx Studio 8 is no longer sold new, so it only makes sense as a used find.
There is a real gap in water resistance: the Tronsmart Fiitune X30 at IPX6 (powerful water jets) against the Harman Kardon Onyx Studio 8, which has no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 8 | Tronsmart Fiitune X30 | |
|---|---|---|
| Price | $197.90 Discontinued | $144.90 |
| Ranked | #12 of 89 in Boombox Size Portable Bluetooth Speakers | #48 of 89 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | - |
| Aux Latency | 42ms | - |
| Bass Extension (-10dB) | 35Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| IP Rating | None | IPX6 |
| Bluetooth Latency | 175ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Power Input | DC Barrel Connector (19V/2.1A) | - |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | - |
| Weight | 7.3 lbs (3.3 kg) | 7.9 lbs (3.6 kg) |
| App | Yes (Harman Kardon One app) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, LDAC |
| Power Bank | No | - |
| EQ | Yes (App EQ) | Yes |
| Party Mode | No | - |
| USB Playback | No | - |
| Bluetooth Version | 5.2 | - |
| Amplifier Power | 50W RMS | 80W |
| Dimensions | 10.6” x 11.9” x 6.3” (268 x 302.5 x 159.5 mm) | 14.6” x 7.7” x 5.1” (370 x 195 x 130 mm) |
| Drivers | 120mm woofer + 2x 20mm tweeters | Racetrack woofer + 2x midrange + 2x tweeters + upward-firing driver |
| Digital Aux Input | No | - |
| Strap | No | No |
Related Speaker Comparisons
How Harman Kardon Onyx Studio 8 compares with other leading options:
- Tribit Stormbox Blast vs Harman Kardon Onyx Studio 8
- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 8
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 8
- JBL PartyBox On-The-Go 2 Plus vs Harman Kardon Onyx Studio 8
- JBL Partybox Encore Essential 2 vs Harman Kardon Onyx Studio 8
Prices on this page were last checked September 30, 2026 at 2:57 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: $197.90 Discontinued Amazon eBay
Newer model: the Harman Kardon Onyx Studio 9, ranked lower, rated 4.1/5.
Pros: At 3.3 kg, Harman Kardon Onyx Studio 8 combines a 120mm woofer and 2x 20mm tweeters with Bluetooth and aux. Claimed 8 hours (manufacturer specified) battery life and up to 96db make its feature set practical for its intended room or portable use. A built-in microphone and the Harman Kardon One app with EQ. Measured bass extension of 35Hz (-10dB).
Cons: Bass is limited by its 35Hz specification. Warm tuning with boosted bass, not as loud as others, and no water resistance rating. Discontinued.
Full Harman Kardon Onyx Studio 8 review and specifications →
| Amplifier Power | 50W RMS |
|---|---|
| App | Yes (Harman Kardon One app) |
| Aux Input | Yes |
| Aux Latency | 42ms |
| Bass Extension (-10dB) | 35Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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 | 120mm woofer + 2x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Partially (1 woofer) |
| Strap | No |
| 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!
- Head-to-Head Comparisons
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- See all 74 comparisons
Tronsmart Fiitune X30: $144.90 AliExpress Tronsmart Best Buy eBay
Pros: A three-way, six-driver design (racetrack woofer, two midranges, two tweeters and an upward-firing driver) with 80W, Hi-Res certification, LDAC, a claimed 14 hours of battery and IPX6. It plays loud with a lot of mid-bass, reviewers found good separation of instruments and voices, and some listeners found it warm and full at high volume.
Cons: Side by side it clearly lost to the Harman Kardon Go + Play 3, the Soundcore Boom 2 and the EarFun UBoom X: listeners described muddy, dark mid-bass that fails to reproduce low notes, dull and underemphasized treble, and a boxy, sterile sound at low volume next to the JBL Xtreme 4.
Full Tronsmart Fiitune X30 review and specifications →
| Amplifier Power | 80W |
|---|---|
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, LDAC |
| Dimensions | 14.6” x 7.7” x 5.1” (370 x 195 x 130 mm) |
| Drivers | Racetrack woofer + 2x midrange + 2x tweeters + upward-firing driver |
| EQ | Yes |
| IP Rating | IPX6 |
| Omnidirectional | No |
| Stereo | Yes |
| Strap | No |
| Weight | 7.9 lbs (3.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jagist reviews: Tronsmart Fiitune X30 Vs Harmon Kardon Go Plus Play 3!!! More from Jagistreviews →
- Dominik Reviews: Tronsmart Fiitune X30 vs HK Go + Play 3 - No chance? - Sound Test More from Dominik Reviews →
- Dominik Reviews: Tronsmart Fiitune X30 vs JBL Xtreme 4 - Complete opposite of eachother? - Sound Test
- Dominik Reviews: Tronsmart Fiitune X30 vs Soundcore BOOM 2 - LETS BOOM! - Sound Test
- Dominik Reviews: Tronsmart Fiitune X30 vs Earfun UBOOM X - BOOMY SOUND! - Sound Test
- Storytripper HD: JBL Xtream 4 vs Tronsmart Fiitune X30 More from storytripperhd →
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