Here for sale 2000s Barber Tone Press Compressor guitar pedal. It's in very good condition and comes as pictured. Parallel compression is the solution. A Barber innovation that blows away having to deal with attack, ratio and release knobs of other so-called "studio compressors." Barber developed a one-of-a-kind proprietary continuous “blend control” circuit and combined it with a discrete “Class A” FET mixer circuit to allow you to continuously blend the natural signal of your carefully selected guitar with a “phase-corrected” classic compression circuit. The result? What guitar players have always wanted, unaltered attack and supernatural sustain and resonance. No studio engineering degree is required.