Yes, I stand corrected. I was confusing my computer's Amazon streaming with CCA.
To my ears, the HD that Amazon does stream to CCA (albeit not lossless) streams is MARKEDLY better than the 320kb/s stream that Spotify Premium does.
I also had true lossless from Tidal, and I could not tell a difference between Tidal to CCA and Amazon music to CCA. That may be either a limitation in my pipeline or my ears or both :)
Hope that helps.
Kind regards

