Built a batch of Discrete R2R DAC for raspberry pi recently.
24bit 384Khz in NOS ( Non Over-sampling ) mode
Distortion: 0.01% at -10dB ( Actual measurement 0.006~0.007% , please watch my youtube video )
Simple Passive RC filter
Output unbalanced RCA . 2V RMS
built-in I2S isolator
Ultra low noise regulators and LC filters
Tuned with audio grade capacitors.
More detail in my youtube channel :
Please email me for more detail: