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 Soundcore Boom 2 ranks #10 of 77 large speakers by sound quality at $129.99.
What the Harman Kardon Luna 2 offers: 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. The tradeoff: 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.
What the Soundcore Boom 2 gets right: Pretty deep bass for the size. Cool lights in the side passive radiators. For the best sound quality use Oluv’s EQ or Alan Ross’s EQ. The catch: Only a single midrange driver, so you only get stereo for the tweeters. Sound processing issues with inconsistent bass notes that disappear at low levels like the Soundcore Boom and Soundcore Boost, not great for listening at low levels.
Buy the Harman Kardon Luna 2 at $199.95 if you want a medium speaker. Buy the Soundcore Boom 2 at $129.99 if you want a large speaker instead.
There is a real battery-life gap here: the Soundcore Boom 2 is rated for 24 hours, the Harman Kardon Luna 2 only 12 hours.
Specifications Side By Side
| Harman Kardon Luna 2 | Soundcore Boom 2 | |
|---|---|---|
| Price | $199.95 | $129.99 |
| Ranked | #22 of 138 in Medium Size Portable Bluetooth Speakers | #10 of 77 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 |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | No | - |
| Weight | 1.6 lbs / 735 g | 3.7 lbs / 1.68 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 7.3" x 4" (297 x 185 x 102 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 120mm x 90mm woofer, 2x 20mm tweeters |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | 45Hz - 20kHz (Manufacturer specified) |
| Output Power | 40W (25W woofer + 15W tweeter) | 80W |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 47Hz |
| Built in Microphone | - | No |
| Bluetooth Latency | - | 125ms |
| Max Volume | - | 105dB |
| Party Mode | - | Yes (PartyCast 2.0 up to 100 speakers) |
| Power Bank | - | Yes (USB-A) |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Harman Kardon Luna vs W-King D8 Mini
- Tribit Maxsound Plus V1/V2/Thunderbox Plus vs KEF Muo gen2
- Tribit Maxsound Plus V1/V2/Thunderbox Plus vs JBL Charge 5 Wifi
- JBL Charge 6 vs Soundcore Boom 2
- Harman Kardon Luna 2 vs Harman Kardon Citation 200
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.
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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
Soundcore Boom 2: $129.99 Amazon B&H Photo Video eBay
Pros: Pretty deep bass for the size. Cool lights in the side passive radiators. For the best sound quality use Oluv’s EQ or Alan Ross’s EQ. With the stock tuning, this speaker would rank around #24, due to the boosted bass and rising treble.
Cons: Only a single midrange driver, so you only get stereo for the tweeters. Sound processing issues with inconsistent bass notes that disappear at low levels like the Soundcore Boom and Soundcore Boost, not great for listening at low levels. Quite bass heavy with BassUp turned on, I’d recommend turning it off. A little bit of a bright tuning in the treble, about +5db.
Full Soundcore Boom 2 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 125ms |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 11.7" x 7.3" x 4" (297 x 185 x 102 mm) |
| Drivers | 120mm x 90mm woofer, 2x 20mm tweeters |
| EQ | Yes |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 105dB |
| MicroSD Playback | No |
| Omnidirectional | No |
| Output Power | 80W |
| Party Mode | Yes (PartyCast 2.0 up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Partially (1 woofer) |
| TWS | Yes |
| Weight | 3.7 lbs / 1.68 kg |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 3D Audio Show: Tribit StormBox Lava vs SoundCore Boom 2 - sound quality demo More from Oluv’Sone →
- JOY‘s 🎧3D🔈Audio-Show: JBL Charge 6 vs SoundCore Boom 2 - David vs Goliath
- Mateusz Cholewa: TRIBIT StormBox LAVA vs Soundcore BOOM 2 More from Mateusz Cholewa →
- Joy & Oluv’Sone: Bose SoundLink Max & SoundCore Boom 2 - indoor soundtest
- Joy & Oluv’Sone: Bose SoundLink Max & SoundCore Boom 2 - outdoor soundtest
- Joy & Oluv’Sone: Best portable speakers 2025 - get the best bang for your buck $$$
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs
- Alan Ross Reviews: Ultimate Soundcore Boom 2 Review - Is It Worth The Hype? More from alanrossreviews →
- Oluv Patreon: Anker Soundcore Boom 2 - first impressions
- Jay’s Straight Up Reviews & More: Soundcore Boom 2 💣vs Mifa Wildbox 🪇 Basement Battle of the Bluetooth Boombox Welterweights ⚖️ More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: New Release! Soundcore Boom 2 😯 Bluetooth Boombox Speaker 🔊 Unboxing, First Look & Sound Demo
- CEONTHEMAKING: Soundcore Boom 2 - HANDS DOWN The Best Speaker Under $150!
- Josh’s Gadgets and More: Budget Monster ZZA K8 vs Soundcore Boom 2
- Joy & Oluv’Sone: JBL, Bose, B&O, Sonos, Earfun, SoundCore… which portable speaker sounds best?
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test
- Head-to-Head Comparisons
- Soundcore Boom 2 vs Mifa Wildbox
- Soundcore Boom 2 vs Marshall Stockwell 2
- Soundcore Boom 2 vs B&O Beosound A5
- Soundcore Boom 2 vs Harman Kardon Citation 200
- Soundcore Boom 2 vs Soundcore Motion Boom
- Soundcore Boom 2 vs Soundcore Select Pro
- Soundcore Boom 2 vs Brane X
- Soundcore Boom 2 vs B&O Beoplay A2 active
- See all 49 comparisons