Short answer: the Marshall Stockwell 2 if sound quality matters most, the Harman Kardon Onyx Studio 4 if price matters most. The Marshall Stockwell 2 ranks #11 of 77 large speakers at $200. The Harman Kardon Onyx Studio 4 ranks #47 at $100, $100 cheaper.
What the Marshall Stockwell 2 offers: Possibly the most natural sounding Marshall speaker. Excellent off-axis. Watch for: Not stereo. Not very loud. Uses added DSP reverb which audio purists may find annoying.
What the Harman Kardon Onyx Studio 4 offers: 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. Watch for: 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.
Buy the Marshall Stockwell 2 when sound quality outweighs the price for you, and the Harman Kardon Onyx Studio 4 when the price outweighs sound quality instead.
If battery life is a priority, the Marshall Stockwell 2 is rated for 20 hours versus 8 hours for the Harman Kardon Onyx Studio 4.
If water resistance matters to you, the Marshall Stockwell 2 at IPX4 (splashing) holds up far better than the Harman Kardon Onyx Studio 4 at no water resistance.
Specifications Side By Side
| Marshall Stockwell 2 | Harman Kardon Onyx Studio 4 | |
|---|---|---|
| Price | $200 | $100 Discontinued |
| Ranked | #11 of 77 in Large Size Portable Bluetooth Speakers | #47 of 77 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 44Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| IP Rating | IPX4 | None |
| Bluetooth Latency | 50ms | - |
| Max Volume | 96dB | - |
| Party Mode | No | Yes (Connect+ up to 100 speakers) |
| Power Input | USB-C | DC Barrel Connector (19V/2.1A) |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Weight | 3.1 lbs / 1.4 kg | 4.5 lbs / 2.06 kg |
| App | No | Yes (HK Connect) |
| Built in Microphone | Yes | Yes |
| EQ | No | No |
| Power Bank | No | No |
| Bluetooth Version | 5.0 | 4.2 |
| Dimensions | 7.1" x 6.3" x 2.8" (180 x 161 x 70 mm) | 11.4" x 11.4" x 5.1" (290 x 290 x 130 mm) |
| Drivers | 3" woofer, 2x 2" fullrange tweeters | 2x 75mm woofers, 2x 20mm tweeters |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Output Power | 20W | 60W |
| Digital Aux Input | No | No |
| Discontinued | - | Yes |
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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
Marshall Stockwell 2: $200 Amazon eBay
Pros: Possibly the most natural sounding Marshall speaker. Excellent off-axis.
Cons: Not stereo. Not very loud. Uses added DSP reverb which audio purists may find annoying.
Full Marshall Stockwell 2 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 44Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 50ms |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.1" x 6.3" x 2.8" (180 x 161 x 70 mm) |
| Drivers | 3" woofer, 2x 2" fullrange tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Max Volume | 96dB |
| Omnidirectional | Yes |
| Output Power | 20W |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | No |
| Weight | 3.1 lbs / 1.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Marshall Stockwell 2 vs Soundcore Motion Boom and Motion Plus! expensive is better? More from alanrossreviews →
- Alan Ross Reviews: Marshall Stockwell 2 vs Denon 250bt - little and large? 🙈
- Alan Ross Reviews: Marshall Stockwell 2 Review and huge sound test! - vs JBL Charge 5! 💯
- Alan Ross Reviews: Marshall Emberton vs Marshall Stockwell 2 - little guy goes louder?? 🤓
- Reddit Search for Marshall Stockwell 2 Review
- Head-to-Head Comparisons
- Marshall Stockwell 2 vs B&O Beosound A5
- Marshall Stockwell 2 vs Soundcore Boom 2
- Marshall Stockwell 2 vs Mifa Wildbox
- Marshall Stockwell 2 vs Harman Kardon Citation 200
- Marshall Stockwell 2 vs Soundcore Motion Boom
- Marshall Stockwell 2 vs Soundcore Select Pro
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- Marshall Stockwell 2 vs Bose SoundLink Max
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Harman Kardon Onyx Studio 4: $100 Discontinued eBay
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 |
| Omnidirectional | No |
| 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 |
- Links
- Reviews, Comparisons and Sound Samples
- Geri’s Collection: Harman Kardon Onyx 7 vs Onyx 4
- OCM Reviews: Onyx Studio 4 Vs Onyx Studio 5 - Sound Quality Comparison - Bluetooth Speaker
- Alan Ross Reviews: Ultimate HK Onyx Studio speaker review and comparison! 8 speakers! More from alanrossreviews →
- Reddit Search for Harman Kardon Onyx Studio 4 Review
- Head-to-Head Comparisons
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- Harman Kardon Onyx Studio 4 vs Sony SRS-XB43
- Harman Kardon Onyx Studio 4 vs JBL Xtreme
- Harman Kardon Onyx Studio 4 vs Doss Soundbox XL
- Harman Kardon Onyx Studio 4 vs Sony ULT Field 5
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