Compressor guitar effect with three modes of compression, which brings Multiband compression into the world of stompboxes, thanks to the MD3 algorithm used in a top studio compressor System 6000. The pedal is commanded by 4 pots – Sustain for the amount of compression, Level for output volume, Attack for the speed of compression and Blend for mixing clean and compressed signal. Three modes can be selected by a small switch – Spectra for a clean studio multiband compressor, Toneprint for custom settings downloadable from the internet and Vintage for classic stombox compressor sound. The large main stomp switch enables the effect or a True Bypass mode. Pedal is made of durable metal alloy and powered by a 9V adaptor, which is not included.