The circuit is from the 1977 National Semiconductor Audio Handbook. The bass and treble control is Baxandall type. The integrated circuit used is not common today.
This interesting bandpass filter using an operational amplifier 741 has its cutoff frequency...
January 2017 - Mouser Electronics is announcing the availability of the new OptoMOS® CPC1010N...
This circuit was obtained in the Audio Handbook of the National Semiconductor of 1977. The...