Headphone Amp with RPI3, KALI and Allo Cheapo

Audio Gear Amplifiers
13

https://jimsaudio.com/low-distortion-0-0001-preamplifier-headphone-amp/

Here is what I have been using and couldn’t be happier. A real DIY project but the results are worth it. My DAC is the Minidsp 2x4 HD.