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Old 22nd March 2007, 02:01 AM   #1
star882 is offline star882  United States
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Default guitar preamp

What opamps and circuit are suggested for amplifying a Squier Telecaster Custom guitar to line level for inputting to a PC sound card?
Some opamps I have considered are RC4580 and AD843. Is either one good for my application?
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Old 23rd March 2007, 03:33 AM   #2
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A TL071 or TL072 is probably the most popular opamp used for guitar amplifiers and preamps. You can also put together a simple discrete preamp using a JFet.

http://www.till.com/articles/GuitarPreamp/
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Old 25th March 2007, 05:49 PM   #3
Minion is offline Minion  Canada
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You can use pretty Much any Fet Input opamp ....The TL07x is very popular but I prefer the OPA134 as it is a Much Faster chip and sounds better to me......


Try useing sockets and try a few different types and use the one that sounds best....


Cheers
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Old 21st April 2007, 03:06 PM   #4
loffe is offline loffe  Sweden
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http://www.velleman-kit.com/engine.php
They sell a kit that does just that.
Probably something like 20 $30 15 max
http://www.tonepad.com/
Has the EHX lpb-1 (linear power booster) that'll do the trick also. It's marked as a beginner project. 14 components total. It's also great if you play through a valve/tube amp. Highly rekommended build.
Direct link:
http://www.tonepad.com/project.asp?id=31
Complete with board pattern layout etc
Absolutely free. If you dont wanna etch the board yourself they sell it for $8.
Hope this helps
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Old 26th April 2007, 07:00 PM   #5
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well, IMO I beleave a simple buffer will do the best, but it sure depends on how hi the output is, and what sensitivity the line-in input of the soundcard has. When I had passive pickups I used buffer and the result was just fine. I used TL071, LT1115, OP134 and NE5532 and countless the LT all sound prefect, low noise...LT could sound just cool for that money, but it was too sensitive for the circuit andcomponents used, so it just oscilated...
but then I bought EMGs, oohh maan
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Noone insult tubes ! :P
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Old 1st May 2007, 02:37 AM   #6
PB2 is offline PB2  United States
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Default Re: guitar preamp

Quote:
Originally posted by star882
What opamps and circuit are suggested for amplifying a Squier Telecaster Custom guitar to line level for inputting to a PC sound card?
Some opamps I have considered are RC4580 and AD843. Is either one good for my application?

Have you thought about if you need any effects, or just a
clean preamp?

Pete B.
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