Philips announced its dedicated Spotify Connect speakers at the beginning of December 2014, but there's a new addition to the set, the Spotify Multiroom Adapter SW100M. 

The adapter can be connected to existing speakers you have using analog (RCA) or digital (coaxial, optical) after which you'll be able to use those speakers as you would the existing Spotify Connect speakers that Philips offers. 

That means you'll be able to send the tunes straight from your Spotify app on your smartphone to your speakers, or include it in part of a multiroom system, moving your tunes from room to room.

There's no price on the SW100M Spotify Multiroom Adapter just yet, but it's slated for launch in the US in Spring 2015.

If you're after the regular Philips Spotify speakers, you have the choice of the SW700M or SW750M. The former houses two 2.5-inch drivers and costs $129.99/£90, the larger latter speaker has two 3-inch drivers and two tweeters, costing $179.99/£130.