The BD MkII stacks a combination of LED/MOSFET OpAmp clipping with a discrete MOSFET gain stage for a complex and dynamic tone. It was designed to be an ultra-dynamic, medium gain preamp capable of warm overdrive or medium gain �Crunch�-style distortion with powerful EQ options. The unique Shift control changes the drive character from warm & transparent overdrive to focused, vocal distortion, perfect for riffs or leads.