Stereo Pre-amp with Volume and Tone Control

This is the circuit diagram of stereo pre-amp with volume and tone control. When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control. This circuit available in kit. This circuit operated with 12V symmetrical/dual polarity power supply.

Circuit Features:

• Stereo volume control
• Stereo Baxandall bass and treble control
• Low noise en = 15 nV/√ Hz (typ)
• Output short-circuit protection
• Low harmonic distortion: 0.01% (typical)

Circuit Specifications:

• Supply voltage: 2 x 12VAC / 100mA
• Frequency response: 3Hz – 500kHz (-3dB)
• Standard amplification: x1
• Signal to noise ratio: 98dB
• Harmonic distortion: < 0.005% (@1KHz)
• Maximum output: 5V RMS
• Tone control:
  + and -15dB @ 20Hz
  + and -15dB @ 15kHz
• Input impedance: 50k ohms

To build this circuit, please download the kit manual document from Velleman. It contains schematic diagram and partlist and the guide to build this preamp circuit.