You don't know it's there until you take it out

I use this with Powercore X8 - I have a number of plug in compressor's available including the highly acclaimed Sony Oxford Dynamics, the CL for powercore & TC's 24x7. The Tube-Tech is a step above all of them. I use it on most every track - it's a no-brainer. CPU usage on the powercore is less than 50% of one chip - actually, I think I can get 3 or 4 per chip. I have a couple of Tube-Tech hardware units, too. Their stuff is largely well executed copies of classic gear but, in my opinion, it's a notch above most commercially available kit. This plug in is no exception - I struggled with the price initially but it's turned out to be worth it.