google chromecast audio + tube preamp

I have a new setup with MasterSound preamplifier with 3 ECC82 which is feeding into a  Monolith by Monoprice 7x200 Watts. I use Revel Salon 2 as my fronts. I connected my google chromecast audio to the MasterSound using standard  AmazonBasics 3.5mm to 2-Male RCA Adapter. I stream Tidal through this setup. Not very impressed with the sound quality. I love high quality music but dont want to go with tapes or phonos. I can only stream through Tidal or Spotify.  Anyone tried this kind of setup? Any better options out there?
you probably do but,Have you made sure the quality is set to max/High quality on the Chromecast Audio?