> but on the other hand, differences in "identical circuits" are often plainly audible.
I wonder how much of that is component tolerances. If you have two identical circuits with +-1% in resistors and +-5% in caps, how different would these sound with the components in each circuit at opposite ends of the tolerance range?
I wonder how much of that is component tolerances. If you have two identical circuits with +-1% in resistors and +-5% in caps, how different would these sound with the components in each circuit at opposite ends of the tolerance range?