Hey guys I'm super super excited to finally be a Marshall owner even if its a low end model. I purchased a G100RCD 100W Amp W/ a 4x12 140W cabinet the other day from an online seller and it sounds great on the clean channel but i cant get anything out of the Boost channel. Turning the volume knob or really any other knob doesn't seem to do anything. And yes it does switch between channels. The red light switches so I know it turns on. Any advice? Thanks!