BrotherKathos
500+ Head-Fier
He brings some balance to the audio world by introducing some objectivity, but he is not really all that objective either really. He appears not to know much about psycho-acoustic research on threshold for audibility of the common distortions we measure of electronic audio gear. Generally speaking, thresholds are much higher than the levels he is typically comparing, but he does not go to great lengths to point out these differences are thought to be inaudible. Tests for distortion are not completely meaningless, it's interesting to know where the theoretical limit is currently. But in terms of sound quality they may be completely meaningless.
In addition, if he wanted to be truly objective he would mount complex time consuming aural tests with a variety of listeners including professional audiophiles, using ABX protocols. Pretty sure he's not interested in adding that layer of complexity to what he's already doing. Meanwhile, to his credit, he does give lip service to the problem from time to time saying something to the effect "these distortion differences are probably inaudible".
And then there's the big elephant in the room we can't measure and therefor no one is talking about, and that are the distortions that remain in the best systems that tell us we are listening to reproductions of music, not live music. We are getting closer, true, but still miles from true convergence. What are those unmeasured distortions? Mostly compression of "reality" that take various forms. "Waveform launch" is a biggie. Scale distortions. "Shape" (of aural phenomena) distortions. Dynamic and frequency range compressions. Dimensionality distortions.
These distortions can be as high as (let's say) 70%. Not 0.00001%. Some "objectivists" give objectivity a bad name
I agree with you in being skeptical of audible distortion based on measurements. I stumbled into that magni 3 and A30 comparison in an effort to explain why my magni 3 seemed so much brighter that my other equipment as I turned the volume up. Like I've said before earlier in the thread it actually sounds pretty good at very low volumes on efficient headphones, but once you start to raise the volume the little unit changes from a son of a god into the little village shrew. I thought it was interesting that the Amirm guy also had the exact same results I did, which looks more like that is just how the amp is designed to operate. His explanations on why that is the case and the relation to the rise in THD as volume increases I'm not so sure about, but both his and my units are both operating similarly.
That is what I put more stock in. We both hear the same thing coming out of the same model(magni 3) when using similar equipment. The magni 3 also gets bright as you raise the volume on all my other dac and headphone combos as well, so its not just one isolated setup producing those results either. So either both me and Amirm got really bad quality units, or their seems to be some design principle whether intentional or not my schiit that makes the magni 3 sound brighter than other amps in or around its price point. Lots of people may like this, and seem to. Personally I've always hated systems overemphasize treble in any way for headphones. Its not as big of a concern for floor standing speakers to me since they are not firing the shrill treble directly into your ear.