2 Ear amplifier adopts input of 3.5mm headphone interface, the output of 6.35mm headphone interface, two-stage amplification, 2 times of NE5532 amplification, 1 time of TPA6120 amplification.

3 The actual capacitance can be chosen according to the situation, the test function can be used, the effect is very good with low sensitivity earphone

Step 2: Power Part Schematic Files

All the schematic files are edited by EasyEDA, It is a free Online PCB design Tool which can generate Gerber files to JLCPCB, you can get your PCB sample manufactured by $2 for 5 pcs.

Step 3: Amplifier Schematic File &PCB Design File

All the manufacture files enclosed can be modified if there is anything that needs to be modified.