Short answer: the Bose SoundLink Plus. It ranks #25 of 105 large speakers by sound quality (rated 4.2/5) at $179.99 and is still sold new; the Harman Kardon Onyx Studio 4 ranks #67 (rated 3.3/5) and is discontinued, so it is only an option used. The Harman Kardon Onyx Studio 4’s replacement, the Harman Kardon Onyx Studio 9, is still sold new.
The Bose SoundLink Plus is the better-sounding, longer-running pick. IP67 rated, IP67 water/dustproof. It is rated for 20 hours of battery against 8 for the Harman Kardon Onyx Studio 4. At 3.3 lbs (1.5 kg) it weighs noticeably less than the Harman Kardon Onyx Studio 4 at 4.5 lbs (2.06 kg). It is rated IP67, while the Harman Kardon Onyx Studio 4 has no water resistance. The tradeoff: Boosted thuddy bass, but not as deep as the SoundLink Flex and you should probably just buy one of those instead if you want a Bose.
Why pick the Harman Kardon Onyx Studio 4: Balanced sound quality with deep resonant bass and crisp treble, large dynamic range. It keeps a wired aux input, which the Bose SoundLink Plus lacks. Watch for: 8 hour battery at medium volume.
Buy the Bose SoundLink Plus. It is rated higher for sound quality and still sold new, while the Harman Kardon Onyx Studio 4 is discontinued.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Bose SoundLink Plus | Harman Kardon Onyx Studio 4 | |
|---|---|---|
| Price | $179.99 | $100 Discontinued |
| Ranked | #25 of 105 in Large Size Portable Bluetooth Speakers | #67 of 105 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes (HK Connect) |
| Aux Input | No | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Built-in Microphone | No | Yes |
| IP Rating | IP67 | None |
| Party Mode | Yes (Bose Party mode) | Yes (Connect+ up to 100 speakers) |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | DC Barrel Connector (19V/2.1A) |
| TWS | Yes | Yes |
| Weight | 3.3 lbs (1.5 kg) | 4.5 lbs (2.06 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| EQ | No | No |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.4 | 4.2 |
| Dimensions | 9.1” x 3.9” x 3.4” (231 x 99 x 86 mm) | 11.4” x 11.4” x 5.1” (290 x 290 x 130 mm) |
| Drivers | 1x 2.5” (63.5mm) woofer + 1x ~0.78” (20mm) tweeter + 4x passive radiators | 2x 75mm woofers + 2x 20mm tweeters + 1x passive radiator |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | No |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 60W |
Related Speaker Comparisons
How Bose SoundLink Plus compares with other leading options:
- Bose SoundLink Plus vs Vifa Helsinki
- Bose SoundLink Plus vs JBL Xtreme 5
- Bose SoundLink Plus vs Tribit Stormbox Lava
- Bose SoundLink Plus vs Brane X
- Bose SoundLink Plus vs Minirig 4 with subwoofer
Prices on this page were last checked October 12, 2026 at 4:13 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
Bose SoundLink Plus: $179.99 Amazon $179.99 eBay
Same family: the Bose Soundlink Flex 2nd gen (smaller model, rated 3.8/5), the Bose SoundLink Max (smaller model, ranked higher, rated 4.3/5) and the Bose Soundlink Micro 2 (smaller model, rated 3.6/5). See every Bose SoundLink Flex, Micro, Max and Plus generation.
Pros: IP67 rated, IP67 water/dustproof. Close to 20 hour battery life. Vibrant sound with booming bass, clean mids. Bluetooth 5.4 with good range. Premium tactile grille, smooth silicone. Quality build at $180.
Cons: Boosted thuddy bass, but not as deep as the SoundLink Flex and you should probably just buy one of those instead if you want a Bose.
Full Bose SoundLink Plus review and specifications →
| Released | Jun 2025 (1 year ago) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.1” x 3.9” x 3.4” (231 x 99 x 86 mm) |
| Drivers | 1x 2.5” (63.5mm) woofer + 1x ~0.78” (20mm) tweeter + 4x passive radiators |
| EQ | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 3.3 lbs (1.5 kg) |
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Harman Kardon Onyx Studio 4: $100 Discontinued eBay
Newer model: the Harman Kardon Onyx Studio 9, rated 4.1/5, released Dec 2024. See every Harman Kardon Onyx Studio generation.
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 →
| Released | Aug 2017 (9 years ago) |
|---|---|
| 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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