Mad Professor Amber Overdrive Custom for Bass Amber Overdrive Custom for bass - overdrive to fuzzy tones fine-tuned especially for bass A perfect combination of brutality and clarity. We wanted to unleash some powerful saturation for bass players and chose to use the Amber Overdrive as a platform. We found the presence in Amber Overdrive could be fine-tuned exactly for what is needed and suits also bass players to be distinctively heard in a mix. The low end was also tuned for bass and a new exciting pedal with a badass nature for the bass was born! Drive section, in Amber Overdrive Custom, will deliver unparalleled versatility and starts from harmonically rich mild overdrive going into the bone-crushing territory at maximum settings.