audio_jungle wrote:Can you extra some more what what is the difference between extra power and what a "preamp" and "amplification" in general does/means?
A dynamic mic produces a signal without any external power. A condenser need phantom power to produce a signal. With this latter one, no phantom power, no joy - nothing happens.
In both cases that signal is very, very weak. It needs to be amplified to a level where the downstream components can work on it. That’s the (preamplifier) “gain”. It’s a knob since not all dynamic and condensers mic are created equal and different mics, regardless of condenser or dynamic, will put out slightly different (weak) levels, so your gain knob allows your preamplifier to work well with a wide range of mic of any class.
Once preamplified, the signal is strong enough that an EQ, a compressor or any of the million effects you can torture it with, work fine. Note that it’s still not strong enough to drive a loudspeaker - another amplifier (the “power amplifier”j has that job, and that also has its gain knob.. which is usually called “volume” :)