Short answer: the Harman Kardon Luna if sound quality matters most, the Sonos Roam 2 if price matters most. The Harman Kardon Luna ranks #24 of 142 medium speakers at $290.99. The Sonos Roam 2 ranks #74 at $179, $111.99 cheaper.
What the Harman Kardon Luna offers: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Its 1.13 kg, claimed 12 hours (Manufacturer specified) battery life, IP67 protection and mono playback make it a practical option for its intended room or portable use. Watch for: Bass is limited by its 57Hz specification. There is no companion app. No EQ adjustment.
What the Sonos Roam 2 offers: Very neutral. Additional button for pairing instead of being shared with power button Watch for: Exact same sound quality as the original Roam. Bass extension isn’t very good. Not stereo. Gets distorted as you turn up the bass.
Buy the Harman Kardon Luna when sound quality outweighs the price for you, and the Sonos Roam 2 when the price outweighs sound quality instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Luna | Sonos Roam 2 | |
|---|---|---|
| Price | $290.99 | $179.00 |
| Ranked | #24 of 142 in Medium Size Portable Bluetooth Speakers | #74 of 142 in Medium Size Portable Bluetooth Speakers |
| App | No | Sonos S2 App |
| Aux Input | No | - |
| Bass Extension (-10dB) | 57Hz | 63Hz |
| Battery Life | 12 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC, AAC |
| EQ | No | Yes (via app, limited in Bluetooth mode) |
| IP Rating | IP67 | IPX5 |
| MicroSD Playback | No | - |
| Power Input | USB-C | - |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | - |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 0.9 lbs (429 g) |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 8.3" x 3.1" x 3.1" (210 x 78 x 80 mm) | 2.4" x 6.6" x 2.4" (62 x 168 x 60 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | - |
| Digital Aux Input | No | No |
| Wi-Fi | - | Yes |
| Built-in Microphone | - | Yes |
| Maximum SPL | - | 95dB (Manufacturer specified) |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Its 1.13 kg, claimed 12 hours (Manufacturer specified) battery life, IP67 protection and mono playback make it a practical option for its intended room or portable use. Measured bass extension of 57Hz (-10dB).
Cons: Bass is limited by its 57Hz specification. There is no companion app. No EQ adjustment.
Full Harman Kardon Luna review and specifications →
| Amplifier Power | 40W |
|---|---|
| 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 |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 2.5 lbs (1.13 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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Sonos Roam 2: $179.00 Amazon eBay
Pros: Very neutral. Additional button for pairing instead of being shared with power button. Measured bass extension of 63Hz (-10dB).
Cons: Exact same sound quality as the original Roam. Bass extension isn’t very good. Not stereo. Gets distorted as you turn up the bass.
Full Sonos Roam 2 review and specifications →
| App | Sonos S2 App |
|---|---|
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.4" x 6.6" x 2.4" (62 x 168 x 60 mm) |
| Drivers | 1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators |
| EQ | Yes (via app, limited in Bluetooth mode) |
| IP Rating | IPX5 |
| Maximum SPL | 95dB (Manufacturer specified) |
| Omnidirectional | No |
| Stereo | No |
| Weight | 0.9 lbs (429 g) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons