Ross Distortion 1977

Ross Distortion Pedal from 1977

Pedal was fully tested and works as it should with no issues.

The Ross Distortion pedal is a vintage-inspired, op-amp hard-clipping circuit originally from the late 1970s, famously revived and manufactured by JHS Pedals at their facility in Kansas City, MO.

Key Features

• Circuit Type: 1970s op-amp hard-clipper, sharing topology with classics like the MXR Distortion +, DOD 250, ProCo Rat, and BOSS DS-1.
• Controls: Simple two-knob layout featuring Level (controls volume) and Distort (controls the amount of hard-clipping distortion).
• Mode Switch: A side push-switch allows you to toggle between two distinct historical eras of the circuit: Germanium Mode ("Era 2", warmer) and Silicon Mode ("Era 3", more transparent/higher output).
• Modern Upgrades: Features soft-touch buffered bypass, a vastly lowered noise floor compared to vintage units, and a standard 9V DC negative center power requirement (draws 40mA).

Sound Profile & Reviews

• Tone: On Harmony Central, there is a consensus that the pedal delivers a creamy, warm, and medium-gain distortion with pronounced mids—similar to an organic tube-like amp breakup.
• Versatility: Reviewers on Guitar World note that it is incredibly responsive to guitar volume roll-off and excels both as a standalone light/medium dirt box or as a clean boost that pushes an already overdriven tube amplifier.

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