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McCaffrey Audio Reactor Boost Compressor



    The Reactor Boost Compressor was truly born by the demands of the people! I was never a big compressor guy. I had numerous requests for various compressor builds over a three month period. I decided to see what all the fuss was about!!!


    • Neutrik Jacks
    • Power: Negative center 2.1mm standard 9V power supply.
    • Single dual op-amp effect with J-Fets and a single diode towards the end of the circuit.
    • Level: Increases/decreases output volume of pedal. Increase the level and notice how the pedal starts to push the front end of your amp and other pedals.
    • Fusion: Affects the amount of compression and drive when the level is increased.
    • Critical Mass Switch: Three-way switch that adds bass response to the effect. Middle is the stock or “jangle” position. Adds a bit O’ snap to pick’n. Left adds just a bit more bass response. Right adds the most bass response.
    • Mad Dog’s Favorite Setting: Put this in front of your slightly driven amp.

      Level to 5:00 or the max setting.
      Fusion to 10:00
      Critical Mass switch to the left position.

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        Brand: McCaffrey Audio


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