Supratek Cortese inputs/outputs - need clarification

Any input that's not a phono input is a line level input, suitable for CD players, Dacs, basically any component that outputs a line level signal. Which is most components that are not record players.

anatoliy sorry what do you mean by piano? One doesn't typically run musical instruments right into a stereo system.

I don't have a piano but if you were plugging your piano into your PV12 then have at it, should work just the same.