Most of the competition clocks on market, being atomic clocks, ordinary active crystal oscillators, temperature-compensated crystal oscillators, and oven-controlled crystal oscillators, are focusing on frequency accuracy.

NADAC C unique mastery is about low jitter and low phase noise which is the fundamental factor impacting sound quality and key a proper True 1-bit Digital to Analog conversion as implemented in NADAC D.

Please refer to https://www.master-fidelity.com/nadac-c/ as well as the Q&A below.