You are person living in a box. You surround yourself with vintage gear in your box then make claims about gear outside your box.
For some irrational reason, you tell everyone there is no more sonic progress in high-end audio. For this reason, you disparage John Curl who is one of the most respected audio engineers - a mirror to your irrational belief that audio tinkering, engineering, materials science, has stopped in high-end audio.
This thread is meant those who believe in the reality of high-end audio’s continued progress