Worst, huh?
Krell entry level KAV 250, BW 9NT, SONY 444ES as preamp, and all Monster wires. It was so revelaing you could tell what color socks of the musicians were wearing... some were not up to participating in maiking a fashion statement of their own.
Only time it sounded good was on rainy nights around 2AM.
Did I mention my ignorance of ground loop issues at the time? Well, even afterwards, it wasn't good.
It pays to address a system's requirements as you go... cables... isolation... synergy... power lines... etc.