McCaffrey Audio Unveils the Reactor Boost Compressor

A simple two-knob compressor with a bass response switch.

Wausau, WI (May 1, 2015) -- McCaffrey Audio announces the release of their compressor pedal, the Reactor Boost Compressor. The Reactor Boost Compressor design was born out of frustration with many made for guitar compressors that are, or have been, on the market. Far too many are not distinctly tuned for guitar, while others shine with single coil but "muddy up" when used with humbucker-equipped axes.

The Reactor Boost Compressor has three simple design principles: 1) Simplicity and ease of use, 2) Specifically tailored to your rig, 3) Must shine with both humbucker and single-coil-equipped guitars. Simplicity comes in the form of two knobs, one to control compression and the other to control level, and one, three-position, switch, to tune the pedal to your specific guitar type: single coil, the brighter modern humbucker or the darker vintage humbucker. If you have custom-wound humbuckers, desire a slightly different tonality to better match your style of music, or just want a "way out there" type of tone, McCaffrey Audio will custom-voice that "CRITICAL MASS" control to your liking, just for asking.

A well-made, well-voiced, compressor can be the mainstay of a guitar rig; whether you're looking to get that chicken-pickin' tonality, smooth your rhythm playing, get endless single note sustain during guitar solos, or just help your guitar sit better in the mix. The new, customizable, and highly versatile Reactor is equally comfortable in a vintage tone rig or a rig designed for modern, full-out, aural assault.


  • Neutrik Jacks standard on all of our pedals.
  • 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.

$169 street

For more information:
McCaffrey Audio

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