Unfortunately, Paul told me I bought his last one. You will have to find a used one. I mate mine with the TAD 1000 monoblocs, but formerly used the TAD 60, which is equally good! I have also used it with Moscodes, Nuforce and they all mate equally well. I compared it with the Aesthetix Calypso, which I also own, and it is probably as good, despite the 4-5 X price differential. For about $750 used, this is an incredible bargain, particularly since the stock tubes are so good. Usually one has to replace stock tubes, so this is a further saving. If paul could figure out a way to have it built again, he'll make a killing, although he'll have to raise the price, since this piece is so outstanding.