These are not really the same size class, and that is the honest framing here. The Harman Kardon Luna 2 ranks #22 of 138 medium speakers by sound quality at $199.95; the Brane X ranks #4 of 77 large speakers by sound quality at $500.
On the Harman Kardon Luna 2 side: 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. Watch for: 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.
The case for the Brane X: Very deep bass, the absolute deepest from this category. Medium bass boost is the most balanced. Set against that: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top. Battery life isn’t great in real world use. High priced. Annoying robot voice announcements. A lot of aux input latency.
Buy the Harman Kardon Luna 2 ($199.95) for a medium speaker; the Brane X ($500) suits a large speaker instead.
Specifications Side By Side
| Harman Kardon Luna 2 | Brane X | |
|---|---|---|
| Price | $199.95 | $500 |
| Ranked | #22 of 138 in Medium Size Portable Bluetooth Speakers | #4 of 77 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | aptX HD, aptX, AAC, SBC |
| EQ | Yes (4 presets + custom) | No |
| IP Rating | IP67 | IP57 |
| MicroSD Playback | No | - |
| Power Input | USB-C | AC Power brick |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | No | - |
| Weight | 1.6 lbs / 735 g | 7.7 lbs / 3.5 kg |
| Bluetooth Version | 5.4 | - |
| Dimensions | 8.5" x 3.3" x 3.2" (216 x 84 x 81 mm) | 9.3" x 7" x 6.1" (236 x 178 x 155 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | 30Hz - 20kHz (Manufacturer specified) |
| Output Power | 40W (25W woofer + 15W tweeter) | 200W |
| Digital Aux Input | No | No |
| Aux Latency | - | 295ms default, 33ms with aux pass-through |
| Bass Extension (-10dB) | - | 31Hz |
| Bluetooth Latency | - | 100ms |
| Max Volume | - | 106dB |
| Party Mode | - | Yes (Brane app, up to 8 speakers) |
| Wifi | - | Yes |
| Built in Microphone | - | Yes |
| Power Bank | - | No |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- B&O Beosound A1 3rd gen vs Harman Kardon Luna
- JBL Xtreme 5 vs Minirig 4 with subwoofer
- Sonos Play vs Harman Kardon Luna
- Brane X vs Marshall Stockwell 2
- Harman Kardon Luna 2 vs Vifa Helsinki
Prices on this page were last checked September 1, 2026 at 2:15 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Harman Kardon Luna 2: $199.95 Amazon B&H Photo Video eBay
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 →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| 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 |
| Output Power | 40W (25W woofer + 15W tweeter) |
| Power Input | USB-C |
| Stereo | 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 JBL Charge 5
- Harman Kardon Luna 2 vs JBL Flip 7
- Harman Kardon Luna 2 vs JBL Flip 6
- Harman Kardon Luna 2 vs JBL Charge 6
- Harman Kardon Luna 2 vs Tribit Xsound Plus 2
- Harman Kardon Luna 2 vs Bose Soundlink Flex 2nd gen
- Harman Kardon Luna 2 vs Bose Soundlink Flex
- Harman Kardon Luna 2 vs Soundcore Motion 300
- See all 29 comparisons
Brane X: $500 Amazon eBay
Pros: Very deep bass, the absolute deepest from this category. Medium bass boost is the most balanced.
Cons: Boosted upper bass ~120hz, rolled off treble, so it’s missing detail up top. Battery life isn’t great in real world use. High priced. Annoying robot voice announcements. A lot of aux input latency.
Full Brane X review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through |
| Bass Extension (-10dB) | 31Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC |
| Bluetooth Latency | 100ms |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.3" x 7" x 6.1" (236 x 178 x 155 mm) |
| Drivers | 2x 2.5" midrange, 2x 0.75" tweeters + 6.5"x9" subwoofer |
| EQ | No |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP57 |
| Max Volume | 106dB |
| Omnidirectional | No |
| Output Power | 200W |
| Party Mode | Yes (Brane app, up to 8 speakers) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| Weight | 7.7 lbs / 3.5 kg |
| Wifi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This speaker left me shocked! Brane X, they said it defies the laws of physics! More from alanrossreviews →
- Alan Ross Reviews: Brane X vs JBL Xtreme 5: Maximum Bass, No Mercy
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle!
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- mark: Brane X Speaker Review 2
- mark: Brane X Speaker Review
- Head-to-Head Comparisons