This device is for stereo image control. It makes mix fatter and wider.
knobs: RANGE & STEREO – for stereo image control. RANGE fully CCW – sides only, leave the centre. Fully CW – sides+ centre. STEREO – fully CCW = OFF, Fully CW = maximum.
SATURATION knob: fully CCW = solid-state saturation, 12o’clock= mix of tube and solid-state saturation. Fully CW – MAX tube saturation. MODE switch has effect from 12 o’clock to max.
TUBES: 2 x 12AX7