I've only been a few months and it took me a couple more to figure out what NOS meant Obviously theres a bunch of different types of nos parts and I'm guessing their sound quality depends on the what it is. Transistors, tubes, pots, caps, all that good stuff. There must be a point of diminishing return, like to where an $80 cap isnt different enough from a $10 replica to make it worth the price. So to the question, are NOS parts really worth it? I'm mostly curious related to pots and caps in guitar wiring.