#1
I am trying to understand what a preamp does.

From my understanding and research, it basically converts your amp to a regular line of circuitry.
Is this right?

And why would you need to have one for recording or something like that?

They are recommended but i want to know exactly what they do and why there are needed?

Anyone want to help?
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#2
Preamps turn the power from AC to DC, or vice-versa. Also, thats where most of the gain is added, so more preamp tubes means more gain.
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#3
Alrighty, but do you necessarily need one>
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#4
For recording? Dunno. Probably.
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#5
Quote by Jango22
Preamps turn the power from AC to DC, or vice-versa. Also, thats where most of the gain is added, so more preamp tubes means more gain.


So AC/DC used not one, but TWO pre-amps?


Yeah, they're suggested. Don't think you'd need one though. I think active pickups like EMGs have pre-amps built into them
#6
Alright,

so if i record some nonsense bullshit
i use a pre amp with my guitars without emgs
hehe
idk
im just planning for a future
and nice joke
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#7
ha, ive been confused on preamps and stuff too, im startin to research to eventually build a crappy home recording studio lol, so like if a preamp would be more gain, if im playin clean would i need one for recording???
#8
i've recorded my bass straight into my comp's line in. it works but no tone shaping of course.

EDIT: and of couse you could only record cleans like this. no gain.
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#9
I'm gonna assume you don't mean the preamp section of an amp.

Preamps for guitars basically just boost the signal. It doesn't convert the signal from dc to ac.

If you're recording directly guitar to computer you probably ought to use something like a pod or something that is designed for that since plugging the guitar into the computer will sound awful.
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#10
Quote by Jango22
Preamps turn the power from AC to DC, or vice-versa. Also, thats where most of the gain is added, so more preamp tubes means more gain.

the rectifier converts the AC to DC. and more gain stages = more gain. preamp tubes can be used for reverb, tremolo, and phase inverting without adding any more gain.
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#11
There are also preamps for microphones....
Studio mics send a very small signal, so you need to run it through a pre-amp before recording to your media, converting to digital, amplify it with a PA, etc

Some mic pre-amps also provide the 48V necessary for condensers to work correctly.
#12
So... much... fail...

Preamp tubes do what they are called. They are the pre set of amplification to the main power tubes.

Sure you could go right into the main power tubes if you really wanted to. But it'd sound like crap. The preamp tubes are the actual physical pieces of equipment that take the low powered signal from the guitar and skyrocket the signal.

Getting distortion is just gaining back the nodes of the amp.

http://www.vacuumtubes.net/How_Vacuum_Tubes_Work.htm

Read^^^
#13
In a nutshell, preamps make the signal from your guitar big enough for the power amp to use.
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#14
Ok all this misinformation is just silly so lets clarify.

A preamp does 2 jobs, job 1 is to take the tiny signal from your pickups and amplify it to the line level that the poweramp requires. Job 2 is the tone shaping, this is the most significant job a preamp does as this will dictate much of your end sound. Be it the EQ, gain stages or the genaral tone.
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#15
Quote by rwalby9
In a nutshell, preamps make the signal from your guitar big enough for the power amp to use.

+1

that's pretty much the textbook definition, I dunno what all the other people were on about :p

A preamp takes a signal and bumps it up to line level.
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#16
Quote by Kevin Saale
I'm gonna assume you don't mean the preamp section of an amp.

Preamps for guitars basically just boost the signal. It doesn't convert the signal from dc to ac.

If you're recording directly guitar to computer you probably ought to use something like a pod or something that is designed for that since plugging the guitar into the computer will sound awful.

No what i was talking about was just using my amp and jsut normally recording

GPedit: Alright, so it just boosts your tone up to a line signal, thus creating a better gain and shaping tone
yes?
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