KA2107  DC VOLUME TONE CONTROL CIRCUIT

PreAmp3 Project is using the KA2107 manufactured by Samsung Electronics. The KA2107 is a monolithic integrated circuit in a 12-pin Single In Line package. It is designed for 2 channels of DC controlled Volume, Balance, Bass and Treble tone control application. It requires very few external components. The tone control circuit can boost or cut a 1KHz signal typically by +10dB/-12dB. The same input signal produces a typical output voltage of 650mV with a THD of 0.2%. The maximum current requirement is 50mA at a Vcc of 12VDC. The onboard 3-pin voltage regulator is capable of providing 100mA of current, more than the maximum requirement of the KA2107.

A typical application circuit, PCB layout and KA2107 Tone Control PreAmp BOM are provided for free, as is no warranty. Enjoy!

Schematic Diagram of PreAmp3 Project using the KA2107

Bottom Copper Layer of PCB

Silkscreen Parts Placement of PCB