Short answer: the Harman Kardon Luna 2, with the Sonos Roam 2 the pick only for its neutral tuning. The Luna 2 stays cleaner at volume and controls its bass through a 62mm x 82mm woofer and passive radiator, at $199.95 against $179. The Roam 2 is very neutral and adds a dedicated pairing button, but its bass extension is not very good, it is not stereo and it distorts as you turn the bass up.
Buy the Harman Kardon Luna 2. It is rated higher for sound quality, and the $20.95 you would save on the Sonos Roam 2 does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
Articulate, spacious midrange with precise imaging and instrument separation.
Amazon $199.95 B&H Photo Video $199.95 eBay
A very neutral 429 g Wi-Fi and Bluetooth speaker with IPX5 water resistance, a 10-hour battery and Alexa built in.
Amazon $179.00 Sonos $179.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| Harman Kardon Luna 2 | Sonos Roam 2 | |
|---|---|---|
| Price | $199.95 | $179.00 |
| Ranked | #25 of 172 in Medium Size Portable Bluetooth Speakers | #92 of 172 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Sonos S2 App |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| 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 | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | 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) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | - |
| Digital Aux Input | No | No |
| Strap | No | No |
| Bass Extension (-10dB) | - | 63Hz |
| Wi-Fi | - | Yes |
| Built-in Microphone | - | Yes |
| Voice Assistants | - | Amazon Alexa (Sonos Voice Control also built in) |
| Maximum SPL | - | 95dB (Manufacturer specified) |
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