I'm just wondering, what is the purpose of a preamplifier, other than to accept multiple inputs? It has some sort of amplifier that does something to the input right? and why? What benefit do you get by putting it before the amp...
OOPS! My reply below was supposed to reply to the original post!
Another (important) thing it does is maintain a constant output impedance. You need an active stage for that.
That's what it is, a contol center for your system. And, that's what it does.
Without it, you can't adjust the volume or switch inputs. An alternative is a passive attenuator (passive preamp) which is simply a volume control and input selector. It normally doesn't even have a plug (some are called passive but have "unity gain" to offset losses along the signal path).
only stupid answers! (Well, that sounds good, but in actual practice, it ain't so).
Hey! Take a grain of salt with ya and co to the following link for a rambling discourse on preamps!
Whoa! You clearly have a lot of time on your hands. Excellent specimen. You are the Troll of all Trolls.
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