After finished making my own CNC routing machine, I just had to find some projects for my machine to run. I came upon this very nice and challenging project — making a pair of electrostatic headphones.

The stators and spacers are machined from 1 millimeter PCB. The diaphragm is 3 microns in thickness.

To finish up the project, I made a direct drive amplifier for my headphones. The design is from www.tubecad.com.

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