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?