After the initial 'wow' factor of Tidal (Masters vs CD) I tired of the sound. To my ears (old ones for sure) Tidal is playing some games with levels and sound balance. Whether this is intentional or simply a product of their proprietary compression I could not say. I find that to do A/B testing on my usual components (iMac, FiiO K5 PRO, Schiit Asgard 3 and Sennheiser HD600) the I need to reduce the volume on the Tidal steam into which ever DAC / amp combo I use. Once done, the difference in sound is consistent and recognizable in blind sessions. The Tidal sound warmer, heavier and more 'center-staged'. It is less detailed and transparent than Amazon - even on CD feeds that are not 'ultra'. While the warmth, bass and loudness of the Tidal stream is initially attractive, it bugs me after a while. The difference in streaming / source versus DAC/Amp combination is huge. Maybe as much as switching headphones or speakers in the testing. I was surprised.
I've canceled my subscription to Tidal after 3 months - and listen entirely to Amazon HD now.
I might try Qobuz soon, but I'm not sure I have the energy for 50 hours of back and fore to make the call. First world problems I know..