These are not really the same size class, and that is the honest framing here. The Harman Kardon Luna 2 ranks #25 of 179 medium speakers by sound quality at $199.95; the Marshall Kilburn II ranks #42 of 120 large speakers by sound quality at $219.
The Harman Kardon Luna 2 is the lighter, tougher option. A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit. At 1.6 lbs (735 g) 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. It has an adjustable EQ, which the Marshall Kilburn II lacks. The catch: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
The Marshall Kilburn II is the longer-running pick. 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 2. It keeps a wired aux input, which the Harman Kardon Luna 2 lacks. It plays in stereo from a single unit, unlike the Harman Kardon Luna 2. Watch for: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak.
Buy the Harman Kardon Luna 2 at $199.95 if you want a medium speaker. Buy the Marshall Kilburn II at $219 if you want a large speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Harman Kardon Luna 2 | Marshall Kilburn II | |
|---|---|---|
| Price | $199.95 | $219.00 |
| Ranked | #25 of 179 in Medium Size Portable Bluetooth Speakers | #42 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (4 presets + custom) | 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 | No | - |
| Weight | 1.6 lbs (735 g) | 5.5 lbs (2.49 kg) |
| Bluetooth Version | 5.4 | 5.0 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 36W |
| Digital Aux Input | No | No |
| Strap | No | Yes (built-in strap) |
| Bass Extension (-10dB) | - | ~58Hz |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
| Power Bank | - | No |
| Maximum SPL | - | 102dB (Manufacturer specified) |
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