the extremely low voltage produced by the mic (it'll be measured in thousandths of a volt) has to be amplified to something more useful. Most electronic gear is set to work at what is known as Line Level which is up nearer to one volt and a mic signal has to be brought up to this level before it is fed into other gear. This amplification is handled by a microphone pre amp--pre amps have a big effect on your sound since they have to add a lot of gain without adding unwanted noise or distortion.
In a USB mic, the signal still has to go through these stages but they're all built into the body of the microphone. So, is this a good idea?
I didn't find the right solution from the internet.
References: http://homerecording.com/bbs/equipment- ... ne-346171/