This is a self-made kit from Takky Parts.com. To improve sound quality, the copper foil on the board has been exposed and solder has been applied. It seems that the earliest BOSS silver screw products had this kind of specification. Some parts are like the ones in photo 7. I was satisfied with making it, and I've only tested the sound. Sound has been confirmed with both an adapter and a 9V battery. Returns are accepted if there is a fatal malfunction upon arrival. Please forgive any misalignment of the drilled holes. Knobs: Left: Volume Right: Overdrive Toggle Switch (Distortion Character Selection): Left: Diode Middle: Clip Right: LED True Bypass Specification Jacks: Switchcraft Wiring: TEFLON STRANDED WIRE 22AWG HEAVY DUTY LED: Aqua 9V batteries and adapters are not included, so please prepare them yourself. Description from the following site: A thorough remake of the discontinued Japanese-made overdrive (OD-1), which still enjoys strong popularity! Despite the simple controls of LEVEL and DRIVE only, the secret of its popularity is its straightforward overdrive feel that doesn't kill picking nuances and makes the most of the guitar and amplifier's characteristics. This is an overdrive pedal that closely resembles the original. Furthermore, you can switch between two types of clipping, expanding the sound variations.