Short answer: the Harman Kardon Luna 2. It ranks #23 of 150 medium speakers by sound quality, rated 4.1/5, at $199.95. The Treblab HD77 ranks #87, rated 3.1/5, at $69.97, $129.98 cheaper, a saving that is not big enough to make up the sound-quality gap.
What the Harman Kardon Luna 2 does well: Articulate, spacious midrange with precise imaging and instrument separation. The catch: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
The case for the Treblab HD77: Supports TWS pairing with a second HD77 for wider stereo sound. The tradeoff: Lacking quite a bit of bass compared to higher ranked speakers.
Buy the Harman Kardon Luna 2. It is rated higher for sound quality, and saving $129.98 with the Treblab HD77 does not make up for the sound-quality gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Luna 2 | Treblab HD77 | |
|---|---|---|
| Price | $199.95 | $69.97 |
| Ranked | #23 of 150 in Medium Size Portable Bluetooth Speakers | #87 of 150 in Medium 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 (additional codecs unverified) |
| EQ | Yes (4 presets + custom) | No |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No (front/rear drivers) |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| USB Playback | No | - |
| Weight | 1.6 lbs (735 g) | 1.4 lbs (637 g) |
| Bluetooth Version | 5.4 | 5.0 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 7.4” x 3” x 3” (187 x 76 x 76 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 2x 48mm fullrange |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 25W RMS |
| Digital Aux Input | No | No |
| Strap | No | - |
| Bass Extension (-10dB) | - | ~66Hz |
| Built-in Microphone | - | Yes |
| Wi-Fi | - | No |
Related Speaker Comparisons
How Harman Kardon Luna 2 compares with other leading options:
- Harman Kardon Luna 2 vs Earfun Uboom L
- Harman Kardon Luna 2 vs Soundcore Motion 300
- Harman Kardon Luna 2 vs Minirig 4
- Harman Kardon Luna 2 vs B&O Beosound A1 2nd gen
- Harman Kardon Luna 2 vs JBL Charge 6
Prices on this page were last checked September 30, 2026 at 2:57 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
Harman Kardon Luna 2: $199.95 Amazon B&H Photo Video eBay
Older model: the Harman Kardon Luna (ranked lower, rated 4/5).
Pros: Articulate, spacious midrange with precise imaging and instrument separation. Tight, well-controlled bass from the 62mm x 82mm woofer and passive radiator despite the compact body, and it stays cleaner at volume than pricier rivals like the Sonos Play. IP67 rated, and two units pair via AirTouch for true stereo sound.
Cons: Treble can sound bright and edgy, and it loses more output off-axis than some rivals. Some listeners hear mid-range rattling on certain tracks, similar to sibling JBL models. 12-hour battery life trails category leaders like the JBL Charge 6, which doubles it. Single unit is not stereo (1.1 driver layout).
Full Harman Kardon Luna 2 review and specifications →
| Amplifier Power | 40W (25W woofer + 15W tweeter) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Digital Aux Input | No |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter |
| EQ | Yes (4 presets + custom) |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 1.6 lbs (735 g) |
- Links
- Reviews, Comparisons and Sound Samples
- What Hi-Fi?: Harman Kardon Luna 2 review
- Joy & Oluv’Sone: Sonos Play & Harman Kardon Luna 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: Harman Kardon Luna 2 UNBOXING vs HK Luna Short Test More from Mateusz Cholewa →
- Storytripper HD: Harman Kardon Luna vs Luna 2 More from storytripperhd →
- Head-to-Head Comparisons
- Harman Kardon Luna 2 vs Harman Kardon Luna
- Harman Kardon Luna 2 vs Bogasing G4
- Harman Kardon Luna 2 vs Xiaomi Sound Party
- Harman Kardon Luna 2 vs JBL Charge 5 Wifi
- Harman Kardon Luna 2 vs JBL Charge 5
- Harman Kardon Luna 2 vs B&O Beosound A1 3rd gen
- Harman Kardon Luna 2 vs Soundcore Boom 3i
- Harman Kardon Luna 2 vs Miatone Boompro
- See all 122 comparisons
Treblab HD77: $69.97 Amazon eBay
Pros: Supports TWS pairing with a second HD77 for wider stereo sound. Aux input for wired listening. ~20 hour battery at low-medium volume; built-in mic for hands-free calls. Measured bass extension of ~66Hz (-10dB).
Cons: Lacking quite a bit of bass compared to higher ranked speakers. Unable to disable the music flashing lights
Full Treblab HD77 review and specifications →
| Amplifier Power | 25W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~66Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.4” x 3” x 3” (187 x 76 x 76 mm) |
| Drivers | 2x 48mm fullrange |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | Yes |
| Power Input | USB-C |
| Stereo | No (front/rear drivers) |
| TWS | Yes |
| Weight | 1.4 lbs (637 g) |
| Wi-Fi | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons