I have hd500
also black top fender jaguar
I use hd500 direct(via usb) with macbook pro retina>garageband
today when I finally started to make my own tone I started with amps. clean and fat sound is great. then I tried distortions, noise gates, EQ, reverb etc... everything was fine. after a while I tried to turn off and turn on the distortion to see the difference but suddenly tone got ugly/muddy. I was just jamming on my own. Didn't touch anything else. Then I realized noise gate does this for a reason. did I fry something? this isn't normal right? Here's the video: http://www.youtube.com/watch?v=8Jt9tMo2EKQ