![]() It is a dual op-amp and it has a different pin-out so there’s a bit of a difference, it is not a drop in replacement. TL072 it is very, very commonly used dual op-amp chip in pedal builds (and all sorts of other audio equipment). That’s a single op-amp chip, I didn’t have it handy so I used TL072. Here’s the schematic: MXR Micro Amp Schematic (click for a larger image) The article is analyzing the pedal in detail, you should check it out, it is great. I got the schematic for MXR Micro Amp from Electro Smash. Getting to Know the Effects MXR Micro Amp This one got too long so I thought to split this into several and publish them as they get ready. In the follow-up posts I’ll do some SPICE analysis, do some breadboarding and then prepare the enclosure and complete the pedal on a protoboard. In this post I’ll get to know the circuits. The other is a circuit I designed myself, and it should give pretty similar output as MXR Micro Amp, but should be a slightly improved version (in my opinion). One is a very dependable and common pedal – MXR Micro Amp. In this post I’ll actually show two circuits. But it does so in a way that makes amplifier design very consistent and predictable. An op-amp is an integrated circuit (a chip) containing several transistors inside of it to achieve a very large gain. In this final build, when it comes to simple booster effects, I am going to use Op-Amps.
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