![transistors - Got audio mixer circuit with lot of noise. Using two different circuits with same output and noise - Electrical Engineering Stack Exchange transistors - Got audio mixer circuit with lot of noise. Using two different circuits with same output and noise - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/tZBYK.png)
transistors - Got audio mixer circuit with lot of noise. Using two different circuits with same output and noise - Electrical Engineering Stack Exchange
![Audio Mixer with Multiple Controls | Full Circuit Diagram Available | Circuit diagram, Audio amplifier, Electronic schematics Audio Mixer with Multiple Controls | Full Circuit Diagram Available | Circuit diagram, Audio amplifier, Electronic schematics](https://i.pinimg.com/564x/60/a6/a2/60a6a23e017265b1e73f430d50fd4902.jpg)
Audio Mixer with Multiple Controls | Full Circuit Diagram Available | Circuit diagram, Audio amplifier, Electronic schematics
![operational amplifier - Audio Mixer Circuit with Individual Volume - Electrical Engineering Stack Exchange operational amplifier - Audio Mixer Circuit with Individual Volume - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/nYWP8.png)