Found in RCA documentation from the 90s, this bass and treble control uses an operational amplifier from the time that can still be found today.
We found this circuit in the 1994 Linear Applications Handbook from National Semiconductor. The...
This digital circuit is from a Radio Electronics magazine from December 1991. It does not use a...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...