So I bought DX7 Pro+ out of curiosity and measured it using Cosmos ADC (grade A).
Note: Here Cosmos ADC is in stereo mode so the noise is not the best. But I care more about harmonic distortions :) My Cosmos APU will arrive tomorrow and then I will measure them again.
THD of DX7 Pro+:
THD of...
Have you guys watched this video before?
Seems like the designer of the Chord DAC is trying to explain...is what he's saying valid or just techno-jargon?