Haha -- I don't have anything yet. I've just learned in the last couple of weeks what a DAC is.
I signed up for Spotify "free" today with the full intention of moving to the premium service in a short time. I just wanted to see how it works and what Spotify had to offer in terms of classical music, and I have been pleasantly surprised at the depth of the content.
I have in my Crutchfield cart the Yamaha A-S801 for listening to music only, and the Yamaha CD-S300 to revive my 300+ CD collection which I have not heard in. let's say, years. Long story. I'm glad I hung onto my Klipsch Forte speakers from 1986. (They are in pristine shape, so I hope they still work.)
Anyway, I also started learning about so-called streamers and wondered if they brought something unique to the acoustic quality of the music. It seemed to me that given the same source and service, though, digital-digital-digital.
AND TO FINALIZE, I recently read (or heard someone say) that if you can manage it, use the USB cable to connect the computer (WIN10 in my case) to the amp, that bluetooth transmission is yet another compression link to be avoided if possible for better audio. At least, I think that is what I understood.
NOTE: I haven't placed my Crutchfield order yet because I have read a bunch about the Outlaw RR-2160. I know Outlaw has a big following on Audioholics. But in the end, I'm thinking the RR-2160 would be a bit complicated for me, whereas the A-S801 is pretty simple.