The Studio Bass Compressor from Seymour Duncan is a compact bass guitar effects pedal designed to deliver studio quality dynamic control without sacrificing tone. The pedal utilizes a voltage controlled amplifier (VCA) to tame loud volume peaks and boost low level signals. The blend knob and 3-way toggle switch allow you to select the frequency range of the original uncompressed signal as well as adjust the amount of "wet" versus "dry" signal that is routed to the output. The attack control sets how quickly the compressor reacts, allowing the original transient through at slower settings, while the compression control offers a ratio of 1:1 to more than 20:1. The level control allows you to balance the signal between the pedal and bypass, making sure your effected sound remains consistent with your bypassed bass tone. The Studio Bass provides a controlled dynamic sound in slap-style playing to keep each note from being overly harsh or overbearing.