I just installed my CS 15 today. Forget about the reduced price. This thing is worth at least what its price used to be if not more. It's taking my breath away. It's almost 2 AM where I live and I can't shut down and go to bed. Right out of the box it has made a huge difference. I can only conclude it is giving my 7B's what they need when they need it which they can't get straight out of the wall. I think it is two things, first is the isolation from the wall making 300 amps available for half a cycle and the fraction of an ohm impedence it presents the 7's. I'm here to tell you this Torus CS 15 is an absolute steal at $2K US. Not only that but it is a knockout looking piece of gear. Mine is silver and looks just great with my silver Bryston gear. I guess it's a guy thing, only we could see beauty in a power isolation transformer. Kind of like I love the smell of new tires and fresh motor oil. OK, I'm rambling so just go get yourself the Torus of your choice without delay.
Merry Christmas to all and to all a good night.