@three_easy_payments, I and many others have had the same great experience with Keith Herron. I called him looking for a VTPH-1mm for my very high output cartridges (5mV!), and he just so happened to have one that had been traded in. He optimized the phono amp for my cartridges not just by substituting 12AT7’s for the second pair of 12AX7’s (decreasing it’s gain by 2dB), but also by installing the capacitive and resistive loading I requested. He then sent along the unused pair of 12AX7’s, in case I would need them in the future! He also went through the entire circuit, not just to insure it was working perfectly and meeting its’ specs, but also to incorporate the improvements he had made to the mm portion of the -1 version, to bring it up to it’s (then) current -2 status. He then burned in the amp, and tested it again. And then sold it to me at a bargain price. What a guy!