Short answer: the Harman Kardon Onyx Studio 4, unless you need the Sony’s waterproofing. The Sony SRS-XG300 is IP67 dust and waterproof rated but our notes call it overly expensive at $219 against $100. The Onyx Studio 4 is the more balanced speaker with deep resonant bass, crisp treble and a large dynamic range, with the 8 hour battery as its weak point.
Buy the Harman Kardon Onyx Studio 4 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Tribit Stormbox Lava instead.
If water resistance matters to you, the Sony SRS-XG300 at IPX7 (brief submersion) holds up far better than the Harman Kardon Onyx Studio 4 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Onyx Studio 4 | Sony SRS-XG300 | |
|---|---|---|
| Price | $100 Discontinued | $219.00 Discontinued |
| Ranked | #58 of 93 in Large Size Portable Bluetooth Speakers | #67 of 93 in Large Size Portable Bluetooth Speakers |
| App | Yes (HK Connect) | No |
| Aux Input | Yes | Yes |
| Battery Life | 8 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | None | IPX7 |
| Party Mode | Yes (Connect+ up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | No | Yes (USB-A, 5V/1.5A) |
| TWS | Yes | Yes |
| Weight | 4.5 lbs (2.06 kg) | 6.6 lbs (3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 4.2 | 5.2 |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters + 1x passive radiator | 2x X-Balanced woofers, 2x 20mm tweeters |
| Dimensions | 11.4” x 11.4” x 5.1” (290 x 290 x 130 mm) | 12.5” x 5.4” x 5.4” (318 x 138 x 136 mm) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 60W | 16W RMS |
| Digital Aux Input | No | No |
| Strap | No | No |
| Bass Extension (-10dB) | - | 54Hz |
Related Speaker Comparisons
More worthwhile head-to-heads for Harman Kardon Onyx Studio 4:
- JBL Xtreme 5 vs Harman Kardon Onyx Studio 4
- Tribit Stormbox Lava vs Harman Kardon Onyx Studio 4
- Soundcore Boom 2 vs Harman Kardon Onyx Studio 4
- Marshall Stockwell II vs Harman Kardon Onyx Studio 4
- Harman Kardon Citation 200 vs Harman Kardon Onyx Studio 4
Prices on this page were last checked October 2, 2026 at 10:18 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 4: $100 Discontinued eBay
Newer model: the Harman Kardon Onyx Studio 9, rated 4.1/5.
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 →
| Amplifier Power | 60W |
|---|---|
| App | Yes (HK Connect) |
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters + 1x passive radiator |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 4.5 lbs (2.06 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Harman Kardon Onyx Studio 4 vs JBL Xtreme
- Harman Kardon Onyx Studio 4 vs Doss Soundbox XL
- Harman Kardon Onyx Studio 4 vs W-King D8
- Harman Kardon Onyx Studio 4 vs Sony SRS-XB43
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- See all 38 comparisons
Sony SRS-XG300: $219.00 Discontinued Amazon eBay
Newer model: the Sony ULT Field 5, ranked higher, rated 3.5/5.
Pros: IP67 dust/waterproof rating. Bluetooth 5.2 with multipoint pairing, LDAC codec support. Retractable carry handle for easy portability. Big boomy bass-forward sound, excellent for parties. Fast-charging: 10 minutes gives 70 minutes playback. Stamina mode optimizes battery. Measured bass extension of 54Hz (-10dB).
Cons: Overly expensive. Bass not as deep as competitors. Upper mids peak. Hollow sounding. Rolled off treble. Not much clarity. Does not float. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Full Sony SRS-XG300 review and specifications →
| Amplifier Power | 16W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.5” x 5.4” x 5.4” (318 x 138 x 136 mm) |
| Drivers | 2x X-Balanced woofers, 2x 20mm tweeters |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 6.6 lbs (3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- DLX Willington: Who Sounds The Best Of Sony XG300, XB43 & JBL XTREME3 With Sound Sample BLIND CHALLENGE Reveal. More from DLXWillington →
- Techder Audios: SONY XG300 VS SOUNDCORE MOTION BOOM More from techderaudios →
- GYMCADDY: JBL Xtreme 3 Vs Sony XG300 - Its Not Even Close More from GYMCADDY →
- GYMCADDY: Sony XG300 Review & Compared To Sony XB43
- New Stuff TV: Sony SRS-XG300 Vs JBL Xtreme 3 More from NewStuffTV1 →
- Head-to-Head Comparisons