He even connected it to the mic module with some custom cable made from two tiny enameled ... He fed the output from the pre-amp into a cheap USB audio interface and voilà!

Closed-back earcups with 50mm drivers provide crisp, clear sound with enhanced isolation from unwanted background noise Includes 3.5mm headphone/microphone combo cable (2.4m/7.9’) , USB-A cable ...

Deciding to go for a full digital design for the circuitry, the peripheral is based off of a MEMS microphone and an STM32 microcontroller doing the heavy lifting between it and a USB connection.