Speaker Cable Rebuild - Need Help

Hi, I have an old pair of Audio Note AN-B (blue color) speaker cables with banana connectors. I need to re-terminate one end with spade connectors to fit my Pass Labs XA30.5 amp.

Where can I buy good quality (gold plated, maybe) spade connectors? Also, I need to get some plastic (pinkish red & black color) heat shrinks for wrapping the cables where the connectors are soldered.

Not sure if you're familiar with the factory Audio Note AN-B speaker cables. At one end, the banana connectors have a special black color heat shrinks (about 2 inches from the connectors)where there's a dent in the middle of the heat shrink. I wonder which end connects to the amplifier? Would it be the end with the special black color heat shrinks? Or, it doesn't really matter.

But I think speaker cables are directional in general.

Thanks for your help.

Richard