I've noticed no one has responded to you. I don't have personal direct experience with the pieces, but from what I have heard, the Threshold T series are very good sounding amplifiers, probably in another league from Aragon. I was going to buy one myself, but have some fear of the special output transistors, the IGBT's, since they are no longer made. The possibility of an output blowing with normal usage is minimal, however, it cannot be guaranteed. Then what?