Completely junk, with problems. I hope those who have experience with parts removal or repairs will purchase this item. It's difficult to see, but in the last image, the black and purple wires are disconnected. There should be a switch in the area circled in red that turns on and off when stepped on, but it's missing. Also, there's no guarantee it will work even if you connect the switch to the wiring. Furthermore, one screw is missing from the back cover. I bought this in this condition on Yahoo Auctions a long time ago, intending to buy a switch and fix it, but it's been sitting unused at my parents' house. I no longer have the motivation or time to attempt repairs. Due to the above, I am selling it at a low price, so please purchase it only if you understand the condition. Compressor effect pedal CS-3, blue, with four control knobs. - Model Name: CS-3 - Type: Compressor - Color: Blue - Control Knobs: SUSTAIN, ATTACK, TONE, LEVEL - Internal Circuit Board: Electronic circuit board Thank you for viewing.