I'm going to step way out of my depth here and also add that a passive pre-amp is basically just a system to switch between inputs and pass that signal on to the amp. No gain added. Is that correct?
What is the purpose and function of a pre-amp in audio sound and production?
I see a lot of items that are described as 'pre-amp' in musical instrument pedals and other items, and I'm curious how this works and what it's function is, and where in-line these devices work.
thank you in advance for any help!