I like the compatibility of Cambridge streamers (Tidal, Spotify, Roon, Airplay,Chromecast).
Stunning Sound Quality – hear every detail from your digital files Twin Wolfson DACs – for stunning digital performance Spotify Connect, TIDAL Connect & Qobuz built in – for the best possible choiceHigh-quality Internet Radio – thanks to MPEG-DASH support Roon Ready – consolidate browsing your...
www.cambridgeaudio.com
Others here like the Bluesound Node.
This is a review and detailed measurements of the Bluesound Node 2i Streamer. It is on kind loan from a member and costs $499. I am assuming their target market is where SONOS dominates if you are familiar with that brand. From the outside, this is one looking and feeling unit! The unit is...
www.audiosciencereview.com
If you are a roon user (or Moode), a raspberry pi with DAC hat will do the trick at a very reasonable price. Build it yourself, or you can buy them pre-configured like these:
The PI2AES was designed to be plug-and-play with all of the major Raspberry Pi media players and multimedia platforms (Volumio, Moode, Roon, OSMC, etc.).
www.pi2design.com
We are a boutique audio company that aims to provide an immersive listening experience by offering a variety of top-quality DACs, streamers, and amplifiers. Our products are meticulously handcrafted in the United States, considering the needs of music enthusiasts who prioritize high-quality...
orchardaudio.com
Matrix Audio has tested very well here, and they have Roon and multi-compatible streaming:
www.matrix-digi.com
(they make more expensive ones, but I'm not sure there's much of a point other than screen real estate and headphone options)
I have personal experience with the Cambridge and all the Raspberry Pi options listed above. I use a pi2AES to an RME DAC to a March Audio power amp in my main system, a Cambridge Audio streamer to a Bryston amplifier in my country house, and the pecanpi, and a home brew pi to feed two desktop dacs (headphones, powered monitors)
RCA or balanced (XLR) out is all you need for your amp (it has both). All the streamers/DACs above work on wifi or ethernet network connections, and typically have optical and SPDIF inputs for CD players or some other digitial source (some have AES, another digital input format)