Short answer: the Harman Kardon Luna 2 on measured sound quality, the Sonos Roam 2 on price. The Harman Kardon Luna 2 ranks #22 of 138 medium speakers at $199.95. The Sonos Roam 2 ranks #73 at $175, $24.95 cheaper.
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. Set against that: 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 Sonos Roam 2 gets right: 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 2 if sound quality is the priority over the price, or the Sonos Roam 2 if the price is the priority over sound quality.
Specifications Side By Side
| Harman Kardon Luna 2 | Sonos Roam 2 | |
|---|---|---|
| Price | $199.95 | $175.00 |
| Ranked | #22 of 138 in Medium Size Portable Bluetooth Speakers | #73 of 138 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Sonos S2 App |
| Aux Input | No | - |
| Battery Life | 12 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC, AAC |
| EQ | Yes (4 presets + custom) | 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 | No | - |
| Weight | 1.6 lbs / 735 g | 0.9 lbs / 429 g |
| Bluetooth Version | 5.4 | 5.2 |
| Dimensions | 8.5" x 3.3" x 3.2" (216 x 84 x 81 mm) | 2.4" x 6.6" x 2.4" (62 x 168 x 60 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 1x ~45mm racetrack mid-woofer + 1x tweeter + 2x passive radiators |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Output Power | 40W (25W woofer + 15W tweeter) | - |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 63Hz |
| Wifi | - | Yes |
| Built in Microphone | - | Yes |
| Max Volume | - | 95dB |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Harman Kardon Luna vs Soundcore Glow
- Harman Kardon Luna vs JBL Charge 3
- Harman Kardon Luna vs Ultimate Ears Wonderboom 2
- JBL Charge 6 vs Sonos Roam 2
- Harman Kardon Luna 2 vs Ultimate Ears Megaboom 3
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
Sonos Roam 2: $175.00 Amazon eBay
Pros: Very neutral. Additional button for pairing instead of being shared with power button
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 |
| Max Volume | 95dB |
| Omnidirectional | No |
| Stereo | No |
| Weight | 0.9 lbs / 429 g |
| Wifi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons