“Black background” — What really contributes to this phenomenon?


How to enjoy the tiniest of musical details and lowest noise floor against the blackest of backgrounds?  
Power? Sources? DAC? Amps? Cables? Tweaks?  Vibration control? Any of these in particular?


redwoodaudio
@tvad what kinds of mods did you undertake?
The first notable improvement in blackening background in my system came from components with robust power supplies. These changes initially came from having early source components modified with significant improvements made to power supplies. The background became blacker. No question. Improvements were easily heard. 
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