For sale is my Herron Audio VTSP 3A preamp and pair of M1 monoblocks. I purchased the VTSP directly from Keith Herron. I am the second owner of the monoblocks, which made a stop in his St. Louis facility in transit from seller to me for upgrade to the then current spec. I have loved these, but time for the proverbial "downsizing" has come as I will be moving to a smaller house soon. My Audiogon feedback has nothing in the last 10 years because, frankly, I finally got off the audio equipment merry-go-round with these units. BTW, the second box down in the photo of the stack is the VTPH, which I plan to keep. I'd prefer to sell all three boxes, but am willing to talk.