Guitar pre amplifier based TL071

Published:2013/3/14 2:57:00 Author:Ecco | Keyword: Guitar pre amplifier | From:SeekIC

The Guitar preamp circuit is very simple, using only a single integrated circuit, a type TL071 OP AMP. The title is an exaggeration, given that the gain of the circuit is intentionally low. When we talk about pre-amp, you can expect amplification often great … that is not the case here. The purpose of this Guitar preamp circuit is mainly to provide impedance matching to allow the use of long cables between a guitar and an amp, while limiting losses to the maximum audio. Although originally this circuit is provided with a gain setting, we will see that it is entirely possible to delete it.This TL071 integrated circuitcan be replacedeasilybyanLT1012,aTL061(which consumesalittle less than theTL071), or evenby a TL081. With the components shown in this circuit will get 110k ohm input impedance. If this value seems a little low, you can increase the value of the two resistors R1 and R2. Using two resistors 1MOhm, you will get the input impedance of about 500k ohm.



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