Thanks Wig, I have ordered Don's preamp and I'm patiently awaiting it's arrival (hopefully early August) So I'm aware of the wait time, and Don was very clear and upfront about it. I'm currently running an Audible illusion mod 3a through a pair of sim moon 400m mono blocks, and I'm looking forward to hearing the Sach pre amp. If I like the pre, I would seriously consider the amp in the future. His stuff seems to check all the boxes.