These sit in different size classes, so this is not a straight ranking comparison. The Bose SoundLink Plus ranks #25 of 120 large speakers by sound quality at $179; the Harman Kardon Luna 2 ranks #25 of 179 medium speakers by sound quality at $199.95.
Different sizes. The SoundLink Plus is a large speaker at 3.3 lbs (1.5 kg) with four passive radiators. The Luna 2 is a medium speaker at 1.6 lbs (735 g). Each is rated within its own class.
The Luna 2 is the more refined listen. Reviews describe an articulate, spacious midrange with precise imaging, and tight bass that stays clean at volume. Its weak points are treble that can turn bright and edgy and a claimed 12 hours of battery. It has an app EQ, and two units pair via AirTouch for true stereo.
The SoundLink Plus trades refinement for runtime and features. It plays in stereo from one unit, lasts close to 20 hours, and charges a phone over USB-C. Its bass is boosted and thuddy, and it has no EQ adjustment, so what you hear out of the box is what you get.
Both are IP67, so either survives a pool deck or a rainy campsite.
Buy the Bose SoundLink Plus at $179 for a large speaker, or the Harman Kardon Luna 2 at $199.95 for a medium speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Bose SoundLink Plus | Harman Kardon Luna 2 | |
|---|---|---|
| Price | $179.00 | $199.95 |
| Ranked | #25 of 120 in Large Size Portable Bluetooth Speakers | #25 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 20 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built-in Microphone | No | - |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Bose Party mode) | - |
| Power Bank | Yes (USB-C) | - |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Weight | 3.3 lbs (1.5 kg) | 1.6 lbs (735 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| EQ | No | Yes (4 presets + custom) |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| Bluetooth Version | 5.4 | 5.4 |
| Dimensions | 9.1” x 3.9” x 3.4” (231 x 99 x 86 mm) | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) |
| Drivers | 1x 2.5” (63.5mm) woofer + 1x ~0.78” (20mm) tweeter + 4x passive radiators | 62mm x 82mm woofer with passive radiator, 20mm tweeter |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | No |
| MicroSD Playback | - | No |
| USB Playback | - | No |
| Frequency Response | - | 58Hz - 20kHz (-6dB) (Manufacturer specified) |
| Amplifier Power | - | 40W (25W woofer + 15W tweeter) |
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