Raumfeld One S review: A great little bathroom speaker

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The Good The Raumfeld One S is a great-sounding Wi-Fi speaker with bass response that could shame much larger speakers, and support for 24-bit/192 kHz files. The speaker now supports Google Cast for seamless integration with other brands' speakers and easy-to-use multiroom. The speaker is compact, and its water resistance makes it a great choice for bathrooms and kitchens.

The Bad The lack of a battery option prevents room-to-room mobility.

The Bottom Line The Raumfeld One S Wi-Fi speaker offers great sonics for its small size -- with the bonus of a bathroom-friendly, moisture-resistant design.

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8.0 Overall
  • Design 8
  • Features 7
  • Sound 8
  • Value 8

Review Sections

Sonos has been the leader in whole-home music streaming industry for a long time, long enough to see numerous competitors fall by the wayside. In the last few years at least a dozen new players have emerged, including DTS' PlayFi, Bose's SoundTouch, Denon's HEOS and Yamaha's MusicCast. Into the breach steps Raumfeld, a German brand which has been in the the UK and coming to the US soon.

While the company's line of wireless products gets pricey very quickly -- the Stereo L is over $2,000 -- the entry-level Raumfeld One S, which is $249 or £199, offers excellent sound quality and a robust design. Compared against both Denon's HEOS 1 and the Sonos Play:1, the Raumfeld comes out on top in terms of sonics and is the only one that supports higher-than-CD-quality music. It's also the only one to support Google Cast which is the best entry-level multi-room music system.

As a gateway drug to Raumfeld's architecture, the One S is pretty compelling. While the native app isn't as comprehensive as competitors the recent addition of Google Cast more than makes up for this. When you also throw in great sound the Raumfeld One S stands out as one of the best entry-level Wi-Fi speakers.

Updated December 9, 2016 The Raumfeld One S (as well as other Raumfeld components) now supports Google Cast, and the review has been updated with further testing.


Sarah Tew/CNET

Compared with the other speakers in the range -- particularly the beautiful Stereo M -- the One S is the plainest-looking Raumfeld speaker. The One S is available in a choice of either black or white, but in either case it is dominated by a black cloth grill. The front and sides are covered in black acoustic cloth and the rest of the speaker is dressed in plastic. While the white version looks a little more striking in its two-tone color scheme, it's not by much.

The One S' moisture-resistant design makes it particularly suited to use in kitchens and bathrooms, and it comes with a rubber stopper to block the ports underneath. The stopper makes the speaker humidity-proof rather than waterproof, for while the rubber adds some protection you can still see the bare driver poking through the acoustic cloth.

The top of the unit houses rubberized buttons for volume and four customizable shortcuts.


The Raumfeld One S is a multiroom speaker which can run either over Wi-Fi or via Ethernet (but not Bluetooth). There's a USB port too. While it's designed to be used in damp environments, even maybe a pool, unlike the Denon HEOS 1 it lacks battery capabilities and therefore portability.

While you can't expect much in the way of "high fidelity" out of a small box like the One S, Raumfeld's ecosystem is especially attractive to audiophiles, namely for its support for high-resolution 24-bit/192 kHz files. For the record, CD quality ends at 16-bit/44 kHz.

Screenshot by Ty Pendlebury/CNET

The Raumfeld is controlled with the use of an app for iPhone, iPad and Android, and it's one of the cleanest and easiest to use out there. The app is specifically designed for tablet use with an attractive three-panel layout, which includes cover art and control of each individual player in your system: from volume to playlists to a three-band equalizer. Services on offer include Spotify Connect, Tidal, TuneIn and DLNA for music from the phone or on your network.

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