guitar preamp

star882 · 22nd March 2007, 02:01 AM

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?

turbolx5oh · 23rd March 2007, 03:33 AM

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/

Minion · 25th March 2007, 05:49 PM

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

loffe · 21st April 2007, 03:06 PM

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

Ragnar · 26th April 2007, 07:00 PM

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

PB2 · 1st May 2007, 02:37 AM

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.

22nd March 2007, 02:01 AM	#1
star882 diyAudio Member Join Date: Mar 2007	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?

26th April 2007, 07:00 PM	#5
Ragnar diyAudio Member Join Date: Mar 2006 Location: in front of my amps	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 __________________ Noone insult tubes ! :P

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23rd March 2007, 03:33 AM	#2
turbolx5oh diyAudio Member Join Date: Jun 2006	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/

25th March 2007, 05:49 PM	#3
Minion diyAudio Member Join Date: May 2006	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

21st April 2007, 03:06 PM	#4
loffe diyAudio Member Join Date: Apr 2007	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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