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Description

A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker. Without this, the final signal would be noisy or distorted.

Recording volume problem. Is it mic/cable/preamp?

I am using an SM57 to record my guitar cabinet. At random times during a recording the volume level will drop signifigantly (like -10 dB) and randomly return to its normal level. It generally does not stay between the two extremes. Also the line can get a little noisy when this happens (not a lot like a loud hum, but noticable enough where it is annoying).

audio interface preamp is very, very quiet?

ever since i purchased my mbox 2 mini i have had a problem getting decent volume from my mics through the low-z XLR input. both of the 1/4" line inputs work fine when plugged into a guitar amp. the mbox 2 mini is supposed to have a preamp on the XLR input but i have to crank the gain up to 10 to hear anything from both of my mics.

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