@teo_audio I've come to liken it to comparing high-end glass for lenses. Zeiss, Leica, or a simple prism from grade school show you what happens when turbulence and time shift occur with light - prismatic effects, halo, chromatic aberrations. Electricity moving through materials (as wave or particle) subject to the same issues. Hence why we call it "colorations" to sound. My $0.02.