COMPRESSORE is a state-of-the-art compression tool that allows you to control gain, threshold, ratio, attack and release like you would on outboard studio compressors. Markbass Compressore is a high-quality tube compressor pedal that features all the individual controls normally found on professional studio outboard compressors: gain, threshold, ratio, attack, release and volume. Not only designed for bass, this Markbass pedal can also be used with guitars or any acoustic or electric instruments, in either live or studio applications, thanks to its state-of-the-art component quality. The bass pedal's ECC 81 tube compresses your signal, evening out the sharp peaks of your playing in a natural, transparent way. At the same time, it also adds warmth and harmonics to your sound. Like all Markbass pedals, this one features "true bypass." So when the compressor is off, your signal goes directly from the input jack to the output jack without any degradation of audio quality. While some compressor pedals offer individual control of nearly all compression parameters, the controls on most comp boxes adjust two simultaneously, and some only have a single "compression" knob. The Markbass Compressore features all the individual controls you would normally find on professional studio outboard compressors.