After trying Bryston 17b cubed with Bryston 4b cubed with my PMC twenty 5/26 and not really enjoying the sound I decided to go the Sugden route I purchased a Masterclass 1A4 integrated pure class A 33 watts/ channel and now I am in heaven Sugden has all the power I need to produce the soundstage the detail the base and balance the pmc is capable of making. I was thinking of purchasing another Masterclass for my Fact 8s but I am waiting for delivery of my Goldnote IS 1000 integrated built in dac streamer and gain adjustment if it doesn’t work out I wouldn’t hesitate to purchase another Sugden for my Facts.