Stereo Pre-Amp Tone Control Circuit with Low Noise Op-Amp TL072 OPA2134
Welcome to the DIY project audio circuit. Today we take the pre-amplifier circuit with TL072, you can connect with Guitar, DVD or iPhone to an amplifier.
The pre-amp circuit is shown in the figure has some interesting characteristics intermediate between “normal” on the assumption that there is such a thing. The circuit was built by a TL072 amplifier. The design is simple and offers an excellent range of tones. The structure is designed to receive a large amount of profit, which is ideal for guitarists that fully distorted “fat” to go to work. It is the figure of the circuit.
The preamplifier uses a dual op amp that each amplification. The single transistor is an emitter-follower and maintains low output impedance at the master volume control. As shown in the figure, with a classical guitar input, it is possible to obtain very high overdrive sound by winding up the volume control, then the captain of an appropriate level.
The frequency response is deliberately limited to the lower end plate to avoid the ups and cut to help boost the sound and response to the normal requirements of the guitar to a minimum. If you TL072 low noise op-amp, as shown, you will find that the noise is a problem, especially at high gain with a lot of treble boost.
I recommend you use an audio file OPA2134 at a premium, you may notice the guitar amp quieter than you have ever heard. In each gain setting, there is more noise guitar pickup circuit noise preamplifier prototype carbon resistors.
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