Well, it does, and very much.
Check out this video below where a generic cement resistors, Duelund carbon/silver resistor and autotransformer are compared in a speaker crossover. Below is a must watch video from Kenrick sound. It is kind of old (dated) but gold!
You have no idea how important they are, till you experienced it yourself. We have used Duelund, Mundorf, WBT, AN resistors/capacitors, and many other audiophile components, and they seldom disappoint us.
Same with NOS tubes. We can't say enough about them, how good they are and how it improved the sound!
Time to take out your soldering irons and get them hot for some soldering work!
J&K Audio Design