These sit in different size classes, so this is not a straight ranking comparison. The Harman Kardon Luna 2 ranks #23 of 144 medium speakers by sound quality at $199.95; the JBL Xtreme 4 ranks #40 of 82 large speakers by sound quality at $309.95.
Why pick the Harman Kardon Luna 2: Articulate, spacious midrange with precise imaging and instrument separation. The tradeoff: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
What the JBL Xtreme 4 does well: A rugged 2.1kg portable with IP67 protection, a replaceable battery, USB-C power-bank output, Auracast, stereo pairing and a useful 5-band app EQ. The catch: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume.
Buy the Harman Kardon Luna 2 at $199.95 if you want a medium speaker. Buy the JBL Xtreme 4 at $309.95 if you want a large speaker instead.
Battery life favors the JBL Xtreme 4: rated for 24 hours against 12 hours for the Harman Kardon Luna 2.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Luna 2 | JBL Xtreme 4 | |
|---|---|---|
| Price | $199.95 | $309.95 |
| Ranked | #23 of 144 in Medium Size Portable Bluetooth Speakers | #40 of 82 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (4 presets + custom) | Yes (5 band) |
| IP Rating | IP67 | IP67 |
| 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) | 4.6 lbs (2.1 kg) |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | 44Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 100W |
| Digital Aux Input | No | No |
| Strap | No | Yes (detachable shoulder strap) |
| Bluetooth Latency | - | 220ms |
| Maximum SPL | - | 106dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (Auracast) |
| Power Bank | - | Yes (USB-C) |
| Removable Battery | - | Yes |
| Built-in Microphone | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for Harman Kardon Luna 2:
- 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 26, 2026 at 11:14 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 (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 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 89 comparisons
JBL Xtreme 4: $309.95 Amazon B&H Photo Video eBay
Newer model: the JBL Xtreme 5, rated 4.6/5.
Pros: A rugged 2.1kg portable with IP67 protection, a replaceable battery, USB-C power-bank output, Auracast, stereo pairing and a useful 5-band app EQ. Independent reviews find the midrange detailed and the sound clear, punchy and refined for outdoor use; it also reaches a strong 106dB maximum level and has excellent real-world battery life.
Cons: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume. The front-facing layout has only modest off-axis consistency, Bluetooth latency is high for video, and the default balance benefits from EQ adjustment. There is no aux input, so wired sources are not supported. Out of the box it leans bass-boosted, with a dip between the upper bass and midrange that EQ cannot fix, and it pushes the upper mids and treble at high volume. It is also expensive.
Full JBL Xtreme 4 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 220ms |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators |
| EQ | Yes (5 band) |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 4.6 lbs (2.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6, Xtreme 4 & Earfun UBoom X - taking sound to the top More from Oluv’Sone →
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs JBL Xtreme 4 - outdoor test
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs JBL Xtreme 4 - basstest (bigger=better?)
- Alan Ross Reviews: JBL Xtreme 4 vs Flip 7 vs Charge 6 – The ULTIMATE JBL Speaker Showdown! More from alanrossreviews →
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Mateusz Cholewa: TRIBIT StormBox LAVA Deep BASS 🆚 JBL XTREME 4 More from Mateusz Cholewa →
- Mateusz Cholewa: Marshall Middleton👌🎶 🆚 JBL Xtreme 4 🎶📢
- Oluv Patreon: JBL Xtreme 4 - sound analysis
- Oluv Patreon: JBL Xtreme 4 - unboxing & first impressions
- Oluv Patreon: Harman Kardon go+play 3 vs JBL Xtreme 4 - first impressions
- Dominik Reviews: JBL Xtreme 4 vs JBL Xtreme 3 Sound Test 😍 Best upgrade in the history? 😂 More from Dominik Reviews →
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026 More from M1MTechChannel →
- Mateusz Cholewa: BOGASING S8 Pro Max 100W vs JBL Xtreme 4 Audio Test
- Mateusz Cholewa: LOEWE We HEAR Pro Super Stereo vs JBL Xtreme 4
- Head-to-Head Comparisons