This is a prototype of a HiLo Overdrive Boost based on the old Mattoverse HiLo Boost which basically adds controls for gain and master volume but also has a separate independent clean boost available via the right footswitch. However, it always seemed to squeal too much when both sides were engaged so was never released. Bare aluminum enclosure.
- True Bypass
- Standard 9V DC Center-Pin Negative Power Supply Only (not included)