Here the simple mixer circuit with 4 inputs and 2 operational amplifier (op-amp) modules: A basic mixer suitable for mixing microphones or even effects outputs. […]


The following circuit is an distortion booster effect for your electric guitar. I don’t know whether this circuit is really works or not, you may […]

The following diagram is the circuit diagram of 20W power amplifier which build based tube component EL34. EL34 is very famous tube and great for […]

The following scheme diagram is the circuit diagram of VOX treble booster effect. A treble booster is an effects unit used by guitarists to boost […]

The following schematic diagram is a small surround sound decoder circuit. You may use this decoder surround sound systems for your home audio system to […]

The following circuit is tube distortion pedal for guitar effect. The circuit designed by Ron Black. Circuit Notes: IC1 : 747 dual op-amp, other ICs […]

Below circuit is the tone booster circuit. According to the name of circuit, the purpose is to amplify the sound signal to become more powerful […]

The following diagram is the Theremin music instrument effect. A guitar or instrument amplifier is an ideal companion unit for the theremin; either one allows […]

The following diagram is the circuit diagram of tube mic pre amplifier 12AX7. This circuit is little hard to built. You must have an intermediate […]