BlackStar Distortion

High Gain Distortion

There have been multiple iterations of this pedal with different paint schemes, I think the most recently produced pedal has a navy blue background.
The pedal I own has a black background; light blue printed text with (top row, left to right) Drive and Tone knobs, and (2nd row, left to right) Drive and Volume knobs.
Single 1/4" unbalanced in (right) & out (left), blue LED indicator. Uses a feedback circuit in which the lower drive knob controls the total drive amount.
current prices on used market range from $85 to $150.