Greer Amps Mizuki BlueGreer Amps Mizuki Blue Mizuki Blue is a dual JFET overdrive pedal designed to replicate the feel and dynamics of two cascading tube gain stages. JFET transistors were created to emulate the warm, responsive character of tubes in a solid state format, and Mizuki Blue puts them to workone stage driving the other into rich, chewy overdrive. From fat vintage grunt to a clear, musical boost, this circuit covers a wide tonal spectrum. The simple three knob