>>107070628
>The R2R K11 has a SINAD of only 72
Aaaand it very likely doesn't matter.
You can do a Klippel listening test, I pass at -51 dB at best. Harman research mentions 1% or 0,5% THD audibility depending on the conditions ( thats -40 and about -46dB ) and was probably done on pure sine tones and not real music material oversaturated with harmonics. Marketing materials and measurement autists pushed the distortion and SINAD norms way beyond reason. 72 dB is probly like 0,025% THD and real life system performance below 1% is already considered acceptable, 0,2-0,5% quite good, and the 0,025% DAC contribution is absolutely negligible compared to the distortion produced by a transducer.