Thank you for viewing. This is a Tommy's Effects TSV808 clone in black. - Number of knobs: 4 From the top left: Volume, Gain, Bass, Treble The upper clip has Jan Ray mode, TS mode, and asymmetric settings. The small knob in the middle is for saturation. It has hardly been used. Velcro is attached to the back. The official statement was that they will no longer make clones, so it may be a discontinued product. Thank you.