In the figure we have the typical circuit of a Baxandall tone control applied to an operational amplifier. The operational can be of any type.
This circuit was found in old Maxim documentation. Check the availability of the IC if you are...
Found in documentation from the 1980s, this amplifier uses an integrated circuit from the time....
This circuit was found in the 1972 RCA Power Transistor Databook. Transistors can be replaced by...