Most guitar players know that for peak performance of their guitar amp, matched output tubes and proper biasing are a necessity. Compulsive Audio has extended that knowledge to every guitar effect we build. Every guitar pedal we make has matched output devices (to within +- 5%) and most have hand-trimmed bias adjustments made after assembly. We do this because it really does make a difference in the tone and reliability of our guitar pedals - sound reasons for purchasing our guitar effects over others. Try one out today and I know you will agree.