A solid treble booster ala Rangemaster by the fine folks at 65 Amplifiers - the 65 Pedals Colour Boost. Four voices and gain deliver some crazy Ranage-flexibility. NTK 274 Germanium transistor... No skimping on componentry - Sozo Caps, Allen Bradley Carbon Comp Resistors, Vishay metal films all built into a durable custom metal enclosure. Comes with the original box. Blue!