I can't comment on Don Sach's custom, but I built the VTA kit that is the starting point for his.
I couldn't be happier, & his can only be better!
I couldn't be happier, & his can only be better!
Don Sach's pre amp
I know these are custom made tube pre amps I am debating on getting one any audiogon members who have this pre amp can they give me a feed back on these /