I would like to add that, even with a ZYX a3 with .24mv out and my ASR Basis Exclusive maxed to around 65db...I can turn the volume 3/4 up on my JRG Concerto pre and not hear anything coming out of my JRG 201 monos. Just the slightest bit of "normal" hiss...so yes...it is VERY possible to achieve this. And Im an amature.