The Compression Sustainer CS-2 allows for a wide range of sound creation, with adjustable LEVEL, SUSTAIN, and ATTACK controls. - Model Name: Compression Sustainer CS-2 - Color: Blue - Control Knobs: LEVEL, SUSTAIN, ATTACK - Country of Manufacture: Japan Untested, sold as junk. Please refer to the photos for the condition. Please purchase only if you understand that this is a used item. Thank you for viewing.