The MAX4410 is a low-distortion, low-voltage, low-power high-fidelity headphone amplifier chip that is suitable for single-cell battery power supply. It not only can be used as a headphone amplifier, but also can be used as an amplifier preamplifier. The effect is not worse than that of the op amp preamplifier. One board for two purposes.
Operating voltage: DC 1.8-6V
Board size: 50mm*25mm
Maximum output power: 80mw*80mw
1. If it is a DC 3.6v-6v power supply, it does not need to be changed.
2. If it is a DC 1.8v-3.5v power supply you need to change it, as shown below:
1: The above green arrow indicates that the voltage regulator chip pin and board are disconnected
2: The black arrow refers to the pin connection of the solder joint to the side regulator chip
The above changes mean that there is no voltage regulation and the power supply is straight through.