Short answer: the Harman Kardon Luna for better sound quality, the Soundcore 3/Soundcore Select 2 for the lower price. The Harman Kardon Luna ranks #22 of 136 medium speakers at $290.99. The Soundcore 3/Soundcore Select 2 ranks #54 at $49.99, $241 cheaper.
What the Harman Kardon Luna offers: Pretty balanced sound besides the boosted bass. Watch for: Not stereo. Boosted bass, not as detailed as higher ranked speakers
What the Soundcore 3/Soundcore Select 2 offers: Good battery life - 20+ hours on a charge. IPX7 rated. PartyCast mode links multiple speakers; app EQ presets. Watch for: A little less bass than similar size speakers.
Buy the Harman Kardon Luna when sound quality outweighs the price for you, and the Soundcore 3/Soundcore Select 2 when the price outweighs sound quality instead.
There is a real battery-life gap here: the Soundcore 3/Soundcore Select 2 is rated for 24 hours, the Harman Kardon Luna only 12 hours.
Specifications Side By Side
| Harman Kardon Luna | Soundcore 3/Soundcore Select 2 | |
|---|---|---|
| Price | $290.99 | $49.99 |
| Ranked | #22 of 136 in Medium Size Portable Bluetooth Speakers | #54 of 136 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | No | - |
| Bass Extension (-10dB) | 57Hz | 60Hz |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | - |
| EQ | No | Yes |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | - |
| Power Input | USB-C | - |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | - |
| USB Playback | Yes | - |
| Weight | 2.5 lbs / 1.13 kg | 0.8 lbs / 372 g |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3" x 3.1" x 3.1" (210 x 78 x 80 mm) | 6.9" x 2.2" x 2.3" (174 x 57 x 59 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 2x 38mm (1.5") titanium diaphragm full-range drivers + 2x passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 40W | 16W |
| Digital Aux Input | No | No |
| Bluetooth Latency | - | 180ms |
| Max Volume | - | 99dB |
| Party Mode | - | Yes (PartyCast up to 100 speakers) |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Turtlebox Ranger vs Tribit Stormbox Pro
- Tribit Maxsound Plus V1/V2/Thunderbox Plus vs Bose Soundlink Revolve+ II
- Bose Soundlink Flex 2nd gen vs Bose Soundlink Mini 2
- Harman Kardon Luna vs Soundcore Motion 100
- Harman Kardon Luna vs Ultimate Ears Wonderboom 4
Prices on this page were last checked August 27, 2026 at 10:09 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: $290.99 Amazon eBay
Pros: Pretty balanced sound besides the boosted bass.
Cons: Not stereo. Boosted bass, not as detailed as higher ranked speakers
Full Harman Kardon Luna review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 57Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 8.3" x 3.1" x 3.1" (210 x 78 x 80 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Output Power | 40W |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 2.5 lbs / 1.13 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Harman Kardon Luna - sound demo More from Oluv’Sone →
- Alan Ross Reviews: Beats Pill vs Harman Luna vs Bose Flex vs Soundcore Motion Plus More from alanrossreviews →
- Storytripper HD: Klipsch Nashville vs Harman Kardon Luna vs Soundcore Motion 300 More from storytripperhd →
- Reddit Search for Harman Kardon Luna Review
- Head-to-Head Comparisons
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- Harman Kardon Luna vs JBL Charge 5
- Harman Kardon Luna vs Soundcore Boom 3i
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Soundcore 3/Soundcore Select 2: $49.99 Amazon eBay
Pros: Good battery life - 20+ hours on a charge. IPX7 rated. PartyCast mode links multiple speakers; app EQ presets.
Cons: A little less bass than similar size speakers.
Full Soundcore 3/Soundcore Select 2 review and specifications →
| App | Yes |
|---|---|
| Bass Extension (-10dB) | 60Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Latency | 180ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 6.9" x 2.2" x 2.3" (174 x 57 x 59 mm) |
| Drivers | 2x 38mm (1.5") titanium diaphragm full-range drivers + 2x passive radiators |
| EQ | Yes |
| IP Rating | IPX7 |
| Max Volume | 99dB |
| Omnidirectional | No |
| Output Power | 16W |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Stereo | Yes |
| Weight | 0.8 lbs / 372 g |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Anker Soundcore 3 vs Tribit Maxsound Plus - Best £50 speaker More from alanrossreviews →
- Alan Ross Reviews: Soundcore Boost vs Soundcore 3 - Best small bluetooth speaker❓
- HQ AUDIO Exchange: Anker SoundCore 3 Vs. SoundCore Select 2 Bass Sound Test
- Reddit Search for Soundcore 3/Soundcore Select 2 Review
- Head-to-Head Comparisons
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