Clean and clear compression. The jhs pedals 3 series compressor presents a refreshingly simple take on compressing your sound. Designed to be as straightforward as possible to use the 3 series compressor is designed with only 3 knobs and a toggle switch allowing you to quickly dial in whatever compression tone youre after. Use attack to alter how long the compression takes to come into effect sustain as the name suggests to control how long the compression lasts and finally volume to set the level of the effect. The bright switch is a neat little addition that allows you to add a little bit of extra high end shimmer letting you instantly access more treble y tones. All this at a remarkably affordable price point helps stand the 3 series apart from any other compression pedal on the market simple versatile effective.