I just bought a Google Chromecast music, I bought it so that I can stream Tidal to my Cambridge Audio 851D. Having set it up I realised that Tidal doesn't stream in MQA/Lossless unless you have a laptop connected. I changed all the settings on the Tidal app on my phone to maximum streaming quality and did some listening comparisons to Spotify premium with various types of music I like, mostly soft rock/folk/easy listening. Through the CA 851D there was, in my opinion, zero difference in quality between Spotify Premium and Tidal. Since I like the convenience of using the app on my phone to control my music streaming and have no desire to buy a new laptop in order to connect it to my DAC, to get the full MQA/Lossless experience, I will stay with Spotify Premium. I then did some comparisons playing Spotify Premium via the Chromecast, which was also set to maximum High Quality Output, to my usual network streamer, a Pioneer N-50 AK. Again, there was IMO no difference in quality that I could hear. I am not an expert on DAC's, so perhaps I am not quite understanding how they work, but if I had realised that the sound would be the same streaming from a £30 Chromecast connected to my DAC, and an expensive network streamer I would have saved myself some money and bought a Chromecast from the off! Has anyone experience of direct side by side comparisons of the 851D/N alongside more expensive DAC's/Streamers. I'd like to know what people thought? What would be the best way of improving the sound from my current set up without having to change my power amp (851W) or speakers (MA Platinum 200's)? Thoughts?