My experience with Mike has been very good. I had the basic upgrade to one of the amps and then did the rest of the modifications myself. Whenever I emailed Mike with questions regarding what parts I wanted to try versus what he used, he was always very helpful. Remember that Mike knows the product better then anyone and he backs up his work. I still own my modified COunterpoint and find few amps that can compete with it when you get it fine tuned. The old mosfets were known to fail. Once they do, do not get the used mosfets, that is a mistake. Either update the amp or sell it.
Happy Listening.
Happy Listening.