Short answer: the JBL Flip 6 for size, the Harman Kardon Luna 2 for bass and midrange. The Flip 6 is very neutral and almost pocket size, a huge leap over the Flip 5, though it is not stereo and has some slight upper-mids emphasis. The Luna 2 ranks #25 of 172 and delivers an articulate, spacious midrange with tight bass from its 62mm x 82mm woofer, but its 12-hour battery trails the JBL Charge 6.
Buy the JBL Flip 6. It is rated higher for sound quality than the Harman Kardon Luna 2 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Articulate, spacious midrange with precise imaging and instrument separation.
Amazon $199.95 B&H Photo Video $199.95 eBay
A very neutral speaker, very small, almost pocket size, a huge sound quality leap over the JBL Flip 5.
Amazon $114.95 Woot $79.95 Lowest eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| Harman Kardon Luna 2 | JBL Flip 6 | |
|---|---|---|
| Price | $199.95 | $79.95 |
| Ranked | #25 of 172 in Medium Size Portable Bluetooth Speakers | #13 of 172 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| EQ | Yes (4 presets + custom) | Yes (3 band) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | No | - |
| Weight | 1.6 lbs (735 g) | 1.2 lbs (544 g) |
| Bluetooth Version | 5.4 | 5.1 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 6.9” x 2.7” x 2.8” (176 x 68 x 72 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 44mm x 80mm woofer, 16mm tweeter |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 30W |
| Digital Aux Input | No | No |
| Strap | No | Yes (built-in loop) |
| Bass Extension (-10dB) | - | 56Hz |
| Built-in Microphone | - | No |
| Bluetooth Latency | - | 116ms |
| Maximum SPL | - | 98dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (PartyBoost up to 100 speakers) |
| Power Bank | - | No |
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