I just purchased a SET 120 Control Amplifier and Vision Q phono preamp from Frank Van Alstine last week to compare with the Rogue Audio Sphinx V3 I was currently using (and enjoying) to drive a pair of Vandersteen 3A Sigs. I find the AVA SET 120 Control Amp to be an absolutely wonderful match for my Vandys, so much so that I will be selling my Sphinx V3. It’s a great value.
I had several questions about the amplifier regarding compatibility with my speakers and the combo deal discount on the Vision Q phono preamp with the SET 120. I left a message and Frank called me back the same day. In addition, I emailed him additional questions and he answered my inquiries promptly. I also was told there would be a 3 week wait due to some back ordered parts (chassis feet). However, it turned out only to be a 1 week wait. Very good customer service in my experience.