what's a preamp?

Re: what's a preamp?

kelvin said:
sorry guys,
but i have no idea :D
a preamp is the section of an amp that provides your tone controls (bass, Mids, treble, presence) and provide the gain's structure.

a poweramp is the section of an amp that amplifies the preamp's signal because the preamp's signal isnt strong/loud enough to be amplified through a cabinet.

Somebody correct me if I am wrong.


Hope that helps,
Duke
 
Re: what's a preamp?

That's right, DoM. To add a bit more: The guitar signal is a fairly low voltage at a very low current, that is a high impedance signal. No way could it drive a speaker. Speakers require a higher voltage and a much much higher current. The purpose of the preamp section is to amplify the voltage with enough current capacity in order to drive the power amp. How much it amplifies is called the "gain" of the preamp The power amp uses larger components that handle higher power, and it is designed to be more efficient than a preamp in order to keep the size and weight down.

A preamp can also be a separate box to put before your amp if you want more "gain", usually to get more overdrive or distortion.
 
Re: what's a preamp?

The cool thing about preamps, now that we've had it so clearly defined (:) ), is that you can mix and match pieces to come up with your own tone. For example, I use an Engl Preamp with a Marshall Power Amp. The result is a sound that's not Engl, nor is it Marshall -- It has the brightness and clarity of Marshall and the sick gain of Engl.

Cool, huh?
 
Re: what's a preamp?

Duke of Metal said:
a preamp is the section of an amp that provides your tone controls (bass, Mids, treble, presence) and provide the gain's structure.

a poweramp is the section of an amp that amplifies the preamp's signal because the preamp's signal isnt strong/loud enough to be amplified through a cabinet.

Somebody correct me if I am wrong.


Hope that helps,
Duke

Perfect explanation Duke! The pre-amp is also the part of the amp that mainly voices the amp. That's why people often change pre-amp tubes, to change the overall amp voice.
 
Re: what's a preamp?

TwilightOdyssey said:
The cool thing about preamps, now that we've had it so clearly defined (:) ), is that you can mix and match pieces to come up with your own tone. For example, I use an Engl Preamp with a Marshall Power Amp. The result is a sound that's not Engl, nor is it Marshall -- It has the brightness and clarity of Marshall and the sick gain of Engl.

Cool, huh?

perfect genius!
 
Re: what's a preamp?

thanks for the replies man...
so actually people with preamp and power amp doesnt need any distortion pedals?
 
Re: what's a preamp?

Not all pre-power-amp combinations provide for enough gain for some people. Think of it this way, my Mesa has a switchable power-/pre-amp option, but if I'd say it didn't have enough gain for me right now I'd want to use a stompbox right? So it really depends on what combination you use for you to make out whether you want more gain.
 
Re: what's a preamp?

Duke of Metal said:
a preamp is the section of an amp that provides your tone controls (bass, Mids, treble, presence) and provide the gain's structure.

a poweramp is the section of an amp that amplifies the preamp's signal because the preamp's signal isnt strong/loud enough to be amplified through a cabinet.

Somebody correct me if I am wrong.


Hope that helps,
Duke
on my cheap Peavey amp,
i can also control the Lows, Mids and Highs ...
so.. ?
 
Re: what's a preamp?

kelvin said:
on my cheap Peavey amp,
i can also control the Lows, Mids and Highs ...
so.. ?
thats the same thing:
Low = Bass
Mids = Mids
Highs = Treble
Presence = Sorta higher highs that provide the sound clarity and bite.

I agree with what TwilightOdyssey & Neeradj said.

Another thing people prefer Rack gear is the control-ability. basicly you can program your programmable midi controlled units to all be controlled through 1 button instead of having to tap dance on loads of pedals, etc..

and just like TwilightOdyssey said.. you combine a different brand preamp with a different brand poweramp, and you have a whole new amp. its sorta like having your own "custom" amp build for you.


Hope that helps,
Duke
 
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