These sit in different size classes, so this is not a straight ranking comparison. The Harman Kardon Luna ranks #26 of 179 medium speakers by sound quality at $290.99; the Marshall Kilburn II ranks #42 of 120 large speakers by sound quality at $219.
The Harman Kardon Luna is the lighter, tougher pick. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. At 2.5 lbs (1.13 kg) it weighs much less than the Marshall Kilburn II at 5.5 lbs (2.49 kg). It is rated IP67 against IPX2 for the Marshall Kilburn II. The catch: Boosted bass, and less detailed than higher-ranked speakers.
The Marshall Kilburn II is the longer-running option. A rugged Marshall styled stereo speaker with a leather handle, quick charging and a sound that suits rock. It is rated for 20 hours of battery against 12 for the Harman Kardon Luna. It keeps a wired aux input, which the Harman Kardon Luna lacks. It plays in stereo from a single unit, unlike the Harman Kardon Luna. The catch: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak.
Buy the Harman Kardon Luna at $290.99 if you want a medium speaker. Buy the Marshall Kilburn II at $219 if you want a large speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Harman Kardon Luna | Marshall Kilburn II | |
|---|---|---|
| Price | $290.99 | $219.00 |
| Ranked | #26 of 179 in Medium Size Portable Bluetooth Speakers | #42 of 120 in Large Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 57Hz | ~58Hz |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| EQ | No | No |
| IP Rating | IP67 | IPX2 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 5.5 lbs (2.49 kg) |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 36W |
| Digital Aux Input | No | No |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
| Power Bank | - | No |
| Maximum SPL | - | 102dB (Manufacturer specified) |
| Strap | - | Yes (built-in strap) |
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