Pre-Decware I owned and/or heard lot of AR gear and while I have never heard the Torii Monos I'm confident that a Ref 3 would be an excellent match with any Decware amp, esp. if you are using the balanced output. If I were to compare the Decware "house sound" with a major market audiophile label it would probably be Audio Research. Both are fast, transparent and well extended at both ends of the frequency spectrum. With what I'll call liquidity rather than tube warmth.