PHILIPS TDA1524A Stereo-tone/volume control circuit handbook
Datasheet
TDA1524A is an active stereo-tone/volume control circuit designed for car radios, TV receivers, and mains-fed equipment. It includes functions for bass and treble control, volume control with built-in contour (can be switched off), and balance. All these functions can be controlled by d.c. voltages or by single linear potentiometers.
