3 - 100% I enjoy listening to my HD tracks and can hear a difference in micro detail and depth and space over my stored WAV/AIFF versions
4 - My stored WAV and AIFF CD's sound fantastic and I prefer this over Tidal
2 - Streaming Tidal HiFi is very good, but I do this the least often at home with my main system, otherwise love it in my car.
1 - Don't have a CD player... N/A
Innuos Zenith MK3 with Phoenix USB Clock, Musetec MH-DA005, Technics SU-R1000, Parasound JC1+ amps, JBL L-100 75's, KEF KUBE 12b's dual