After experimenting with shorting caps on preamp inputs, my conclusion was that the plastic dust covers already provided with Accuphase products do just as well (in other words there were no perceived sonic differences using a metallic composition cap at least in my experience). These plastic Accuphase dust caps may be available separately from one of their dealers such as Audio Unlimited in Colorado
RCA End Caps
What are people's experiences with them? Cardas has them at $3 each which seems awefully expensive especially since I would need 39 of them. I don't want to use almuminum foil (I'd rather pay $3 each). Are there other brands to consider? I would want some that don't short the inputs like the Cardas ones. Do you need them on unused the ouputs? How about Digital Coax? Thanks! leo.