List a Condition you know of that will produce Better Sound

Unplugging unused gear from your preamp and from the AC wall outlet ALWAYS results in better sound.  In other words, if you’re listening to LPs unplug the input cables for your CD player, DAC, FM etc. from your preamp or amplifier.  And also unplug the power cords from the wall outlets.

There are no absolutes in audio other than good sounding stuff sounds better than worse sounding stuff. How you get there is often irrelevant. 

Very heavy components always sound better than light ones.

Night better than day.

Cool looking gear always sounds than ugly gear