Pretty sure you will have trouble driving 803S to decent output levels with a $2K integrated; it's a real burden on underbuilt amps. Not a ROTEL-sound fan at all, so not an option to me at all.
Maybe try to find a used Parasound A21 power amp, stable to 400w at 4ohms, new at $2K.
Good luck.
Maybe try to find a used Parasound A21 power amp, stable to 400w at 4ohms, new at $2K.
Good luck.