Short answer: the Harman Kardon Onyx Studio 4. It ranks #47 of 77 large speakers by sound quality at $100; the Bogasing S8 Pro ranks #62 and costs $152, so there is not much of a tradeoff to weigh.
What the Harman Kardon Onyx Studio 4 offers: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. Watch for: 8 hour battery at medium volume.
What the Bogasing S8 Pro offers: Use “vocal” mode for the flattest response, still not great. Watch for: Huge treble peaks in most sound modes, sounds sizzling and harsh.
Buy the Harman Kardon Onyx Studio 4. It ranks higher for sound quality than the Bogasing S8 Pro and costs less, so there is no real case for the other one.
If sound quality matters at all to you, skip the Bogasing S8 Pro. It ranks near the bottom of the 77 large speakers, so look higher up the list instead.
If battery life is a priority, the Bogasing S8 Pro is rated for 15 hours versus 8 hours for the Harman Kardon Onyx Studio 4.
If water resistance matters to you, the Bogasing S8 Pro at IPX5 (water jets) holds up far better than the Harman Kardon Onyx Studio 4 at no water resistance.
Specifications Side By Side
| Harman Kardon Onyx Studio 4 | Bogasing S8 Pro | |
|---|---|---|
| Price | $100 Discontinued | $152 |
| Ranked | #47 of 77 in Large Size Portable Bluetooth Speakers | #62 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes (HK Connect) | No |
| Aux Input | Yes | Yes |
| Battery Life | 8 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | None | IPX5 |
| Party Mode | Yes (Connect+ up to 100 speakers) | No |
| Power Bank | No | No |
| TWS | Yes | Yes |
| Weight | 4.5 lbs / 2.06 kg | 3.4 lbs / 1.55 kg |
| Bluetooth Codecs | SBC | SBC |
| Built in Microphone | Yes | Yes |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Yes | Yes |
| Bluetooth Version | 4.2 | 5.0 |
| Drivers | 2x 75mm woofers, 2x 20mm tweeters | 60W: Dual drivers + passive radiator |
| Dimensions | 11.4" x 11.4" x 5.1" (290 x 290 x 130 mm) | 10.7" x 2.1" x 2.9" (271 x 53 x 73 mm) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 48Hz - 20kHz (Manufacturer specified) |
| Output Power | 60W | 60W |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
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- Harman Kardon Onyx Studio 4 vs Harman Kardon Onyx Studio 9
The Two Speakers In Full
Harman Kardon Onyx Studio 4: $100 Discontinued
Pros: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. Multi-host Bluetooth connectivity for 2 phones, daisy chaining up to 100 speakers. Elegant modern design with smooth curves and premium materials.
Cons: 8 hour battery at medium volume. Not at loud as others. Not as deep of bass as the newer Onyx. External AC power brick for charging. Discontinued.
Full Harman Kardon Onyx Studio 4 review and specifications →
| App | Yes (HK Connect) |
|---|---|
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.4" x 11.4" x 5.1" (290 x 290 x 130 mm) |
| Discontinued | Yes |
| Drivers | 2x 75mm woofers, 2x 20mm tweeters |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Output Power | 60W |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes |
| TWS | Yes |
| Weight | 4.5 lbs / 2.06 kg |
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Bogasing S8 Pro: $152 Amazon
Pros: Use “vocal” mode for the flattest response, still not great.
Cons: Huge treble peaks in most sound modes, sounds sizzling and harsh.
Full Bogasing S8 Pro review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.7" x 2.1" x 2.9" (271 x 53 x 73 mm) |
| Drivers | 60W: Dual drivers + passive radiator |
| EQ | No |
| Frequency Response | 48Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Output Power | 60W |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 3.4 lbs / 1.55 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons