I have a P-L-P (pathetic little preamp) which is a 25k TDK motorized pot. At the risk of being called tin ears, or worse, my Adcom GFP-750 could switch between active and passive and the differences were virtually inaudible. Maybe becasue I listen at 60-70dB.
Active a tiny bit more dynamic, passive a tiny bit clearer/ less grainy.
Active a tiny bit more dynamic, passive a tiny bit clearer/ less grainy.