I'm absolutely not trolling. I have a lot of respect for measurements, otherwise I wouldn't be a member of this forum. However, I do respect reviews and measurements immensely. I'm just trying to say that after measurements, listening is essential, as two DACs with identical measurements can sound different. This is because each DAC chip has its own sonic signature (ESS, AKM). If we then bring in an R2R, the difference is even more marked with the same measurements. And I'm not talking about the brain, mood, nervousness, or calm. I'm talking about plugging one in, listening to a track, unplugging the DAC, plugging in another, and listening to the same track again. So there's no auditory or psychological memory. There's only the ear that listens to two DACs and the same track for a total of 5 minutes maximum. If the discussion shifts to the brain, to deceptive hearing, probably all audiophiles or music lovers would need a psychologist rather than a DAC.