New answers tagged electric-guitar
First off, notice another label on the back of the amp: "Jacks paralleled". This means that both of the output jacks carry the same signal; there are two of them for the sole purpose of allowing you to plug in two cabinets without needing a splitter, or having a "daisy-chain" jack on the cabinets. This is a single-channel amp, as most guitar amplifiers are; ...
It's more about practicality than of necessity. Imagine a guitar with one pickup and no volume or tone knobs. You're right, this would produce slightly less noise (probably less than the noise floor you'd get on any recording - but in theory any component passive component will add some noise). However, you would probably want control your volume/gain ...
Another consideration: assuming your guitar has at least two sets of pickups, if you didn't have what's essentially a mixer on/in your axe, you'd need to pass more wires to the remote preamp. That not only increases the complexity of the patch cord but increases the risk of crosstalk and interference pickup.
Its just another point of tonal control basically. Raw signals can be very intense, and this helps to smooth the dynamics out a little bit. As well as providing a rough EQ with your tonal knobs. Generally those knobs are associated with one of your pickups, usually with one that controls the full output as well, and as such will control their output by ...
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