I've heard tell of running a SVT-CL with the Master all the way up and using the gain knob as a volume control - effectively making it sound more like the SVT-VR. Two questions: 1) For those that do this, do you dig the results? 2) Will this shorten the life of your tubes? I typically run a preamp into a big, clean SVT, either a Rusty Box or a Darkglass B7K but I'm curious to hear people's thoughts. Thanks a bunch!