mesa 2 90

I'm selling my guitar rack. Everything in has always worked perfectly for me and sounds freakin' amazing. This has been my absolute favorite set up in the 22 years I've been playing. You will not be disappointed with this rig. It includes a Mesa 2:90 power amp, Rocktron Velocity 300 Touring...

Is there anyone here using one? Whenever I activate any of the switches (deep, modern or 1/2 drive) using a regular instrument or speaker cable, I hear a clicking noise that is not audible through the speakers, but instead it comes from inside the power amp itself. It's low, only noticeable...