Streamer upgrade


I need recommendations for a new streamer that will replace my Sonos Connect.  The rest of the system, developed largely from AG recommendations, consists of Fritz speakers, driven by a Primaluna EVO100 integrated. Sources are a Clearaudio Concept table and Cambridge Audio CD transport through a Schitt Bifrost (also handling DAC duties for the Sonos).  I'm using Amazon HD as a streaming source right now.  This system doesn't need to integrate with  my other Sonos speakers.  It's my intention that this be an end-game system, so I'm looking for a streamer that's appropriate to its level rather than something that's going to lead me down the path of perpetually upgrading other components.  Price is a secondary concern, used gear is fine.

Thanks for any advice - truly appreciated, and I'm grateful for all of the forum help I've received in the past.
philiptamarkin
I’d consider an Innuos Zen Mk3.  It’s an excellent streamer, but it’s also got its own CD drive and internal storage so you can load all your discs into it, ditch the transport altogether, and have access to all your music in any order or playlist you wish along with the entire world of streamed music.  Also, I’d very highly recommend getting Qobuz for higher-quality streaming — I’m a Prime member but wouldn’t use Amazon HD as the quality is just not there, at least not yet.  Hope this helps, and best of luck. 
Steamer only, or streamer with integral DAC? I ask this as the Bifrost will be the limiting component if you go streamer only.
The choices are myriad.  I know that SOtM, microRendu (SGC) and others DO NOT play Amazon HD look before you leap. Proprietary and subscription Volumio DOES. At least you don't have to worry about DSD with the Bitfrost - nada.