Headphone Audio Amplifier Circuit Diagram. The headphone amplifier provides a maximum output of 1 watt to an 8 ohm load by an input level of 500 mv. This circuit is made in such a way that user can not only use it as headphone amplifier but also can drive a subwoofer speaker or normal speaker 4 ohms and can get a amazingly loud sound through the speaker.

Stereo 35w amplifier circuit tda7375. High impedance headphones can be connected. Above is the schematic of one channel.

Stereo 35w amplifier circuit tda7375.

First the audio signal comes to the input through j1 and c1. The circuit can also drive a 4 ohm speaker. This circuit is made in such a way that user can not only use it as headphone amplifier but also can drive a subwoofer speaker or normal speaker 4 ohms and can get a amazingly loud sound through the speaker. Figure 1 headphone amplifier circuit diagram.