This control for bass, midrange, and treble was found in the March 1995 issue of Electronics Now magazine. The circuit requires a dual power supply.
This circuit was found in an American 1980s documentation. The transistorized step is the...
January 2017 - The new Texas Instruments TLV354x series of operational amplifiers with 200 MHz...
The circuit shown is from the 1993 Motorola Linear Interface ICs. The power source may be common...