Short answer: the Tronsmart Halo 200 for runtime, the Onyx Studio 9 for a fuller feature set. The Halo 200 packs a 15,000mAh battery rated 18 hours, though its bass is not as deep as some of the top ranked. The Onyx Studio 9 adds Auracast multi-speaker connection alongside classic stereo pairing, but has slightly recessed mids, a boost in the upper mids and rolled off upper treble.
On the Harman Kardon Onyx Studio 9 side: Auracast multi-speaker connection alongside classic stereo pairing. The catch: Slight recessed mids, boost in the upper mids, rolled off upper treble.
The case for the Tronsmart Halo 200: 15,000mAh battery rated 18 hours. Set against that: Not as deep bass as some of the top ranked.
Buy the Harman Kardon Onyx Studio 9 if sound quality is the priority over the price, or the Tronsmart Halo 200 if the price is the priority over sound quality.
Water resistance is not close: the Tronsmart Halo 200 is rated at IPX4 (splashing), well ahead of the Harman Kardon Onyx Studio 9 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 9 | Tronsmart Halo 200 | |
|---|---|---|
| Price | $189.99 | $169.99 |
| Ranked | #14 of 75 in Boombox Size Portable Bluetooth Speakers | #52 of 75 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 41Hz | 44Hz |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) | 110dB (measured by Alan Ross Reviews) |
| IP Rating | None | IPX4 |
| Power Input | AC Power Cable (2-Prong) | USB-C |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 9.3 lbs (4.2 kg) | 13.4 lbs (6.1 kg) |
| App | Yes (Harman Kardon One app) | No |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (App EQ) | Yes (multiple modes) |
| Party Mode | Yes (Auracast) | No |
| USB Playback | No | Yes |
| Bluetooth Version | 5.3 | - |
| Battery Life | 8 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Amplifier Power | 50W RMS | 120W |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) | 15.2" x 11.1" x 10.5" (386 x 282 x 266 mm) |
| Drivers | 120mm woofer + 3x 20mm tweeters | 1x 5.7" (145mm) woofer + 2x 2.24" (57mm) mid-tweeters + 1x 1.22" (31mm) tweeter |
| Digital Aux Input | No | No |
| Aux Input | No | Yes |
| Aux Latency | - | 16ms |
| Guitar Input | - | Yes |
| Bluetooth Latency | - | 160ms |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Power Bank | - | Yes (USB-A) |
| Built-in Microphone | - | No |
| MicroSD Playback | - | No |
| Lights | - | Yes |
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Prices on this page were last checked September 22, 2026 at 5:11 AM 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 9: $189.99 Amazon eBay
Pros: An elegant 4.2kg living-room portable with a measured 41Hz -10dB bass point, 101dB maximum level, three tweeters, app EQ, stereo pairing and Auracast multi-speaker linking. Reviews praise its balanced, smooth presentation and non-fatiguing treble, making it a more music-focused choice than most party speakers. Measured bass extension of 41Hz (-10dB).
Cons: It has no water resistance, aux input or USB playback, and its eight-hour claimed battery life is short for an outdoor portable. Bass is less deep than some earlier Onyx Studio models, while the slightly recessed mids and rolled-off top end mean it is not the most open or detailed option; it still charges from an AC power cable rather than USB-C.
Full Harman Kardon Onyx Studio 9 review and specifications →
| Amplifier Power | 50W RMS |
|---|---|
| App | Yes (Harman Kardon One app) |
| Aux Input | No |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) |
| Drivers | 120mm woofer + 3x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Input | AC Power Cable (2-Prong) |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 9.3 lbs (4.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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Tronsmart Halo 200: $169.99 Tronsmart eBay
Pros: 15,000mAh battery rated 18 hours; charges in 3.5 hours. Three-way speaker system with dynamic lighting. SoundPulse tech reduces distortion. Stereo pairing and broadcast mode (100 speakers). Measured bass extension of 44Hz (-10dB).
Cons: Not as deep bass as some of the top ranked. Use Bass EQ for most neutral sound. Wavy frequency response.
Full Tronsmart Halo 200 review and specifications →
| Amplifier Power | 120W |
|---|---|
| App | No |
| Aux Input | Yes |
| Aux Latency | 16ms |
| Bass Extension (-10dB) | 44Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 160ms |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 15.2" x 11.1" x 10.5" (386 x 282 x 266 mm) |
| Drivers | 1x 5.7" (145mm) woofer + 2x 2.24" (57mm) mid-tweeters + 1x 1.22" (31mm) tweeter |
| EQ | Yes (multiple modes) |
| Guitar Input | Yes |
| IP Rating | IPX4 |
| Lights | Yes |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Partially |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.4 lbs (6.1 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons