I really like to crank it sometimes, I am a little hesitant that 15-20 tube watts may not be enough with the ZU's. My current SS amp is 80 watts and it does not peter out and feels there's plenty left. That is why I was thinking the 75 watt 275 may be the trick.
Is the Quicksilver 60 Watt Monos SET?
Is the Quicksilver 60 Watt Monos SET?