Boss DS-1-BK Distortion (Black)
The Boss DS-1-BK was a limited edition DS-1 sold only at Guitar Center stores in the USA. These used a stock DS-1 circuit and components and featured an inverse paint scheme. Strangely, there was very little publicity of these pedals and no information was uploaded to the Boss website. These were limited to a total of 3000 units.
These slightly differ from the DS-1 4A, using a black screw and slightly different coloured font.