Channel Dividing Stereo Preamplifier (1969)
In nice condition! Original box, packing and manual are not included.
This is a very cool piece! Its a three channel electrionic crossover from the late '60s.
It allows for crossover frequency adjustments, bass turnover frequency, bass boost, and level control.
See the last 4 jpegs attached which have been edited from the owners manual found on line for more info.