Detachable Wire connectors on PCB

New member and on a huge learning curve here, I am in process of resorting a vintage HMA-6500 Amp I recently acquired. Amp works but I do hear quite a bit of background noise when nothing plays so I am now on the journey to clean it up and replace aging capacitors and other components.

I see these numerous wires connected to the PCB Twisted and soldered, I would like to replace them with some sort of plugin connectors that can be unplugged and looking for some recommendations on parts and suppliers so that I can redo these connections.
 

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Pretty substantial connections. Take a look at Digikey or mouser for some ideas. You'll need amperage and pin spacing. If it is a standard spacing, should be pretty easy to find one that works. I think Amp has something called MateNLok that is beefy enough but not sure it comes in board mount.