The Keeley modded DS-1 distortion pedal has a lower noise level than the stock pedal. Metal film and poly capacitors are used in the coupling sections to provide the true midrange and high frequency transparency your guitar tone needs while increasing the bass response.
It goes without saying that the note definition has been improved. The final result is an awesome distortion pedal that provides more gain and volume while losing no note definition. Perfect for driving Marshall stacks and other high-powered gear. The DS-1 effect pedal has been modified to have asymmetrical clipping, which gives you second-order harmonic distortion. In addition to lending a very musical sound, the Boss distortion pedal produces an octave-type effect at very high saturation levels.