1 Input – 4 Outputs Stereo Audio Splitter
This 1 Input – 4 Outputs Stereo Audio Splitter has a single input and 4 independent outputs, each amplified with an operational amplifier.
Each operational amplifier is configured as an emitter follower, to take advantage of its high input impedance and low output impedance, thus avoiding distortion in sound.
The output electrolytic capacitors are to prevent the continuous current component from the output of the operational amplifier from being transferred to the load. The control potentiometer is used to vary the output level of the audio signal. In order to built a complete stereo system, you must make two circuits equal to the following diagram.
List of components of the 1 Input – 4 Outputs Stereo Audio Splitter
- 2 LM324 or TL084 ICs (4 operational amplifiers in a single package)
- 8 100k resistors (R)
- 8 1uF / 25 volt electrolytic capacitors (C)
- 8 50K potentiometers (P)
Note: To power the circuit you need a dual polarity output power supply (+/- 12v)