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Home  /  Works  /  Boutique compressor pedal
LM13700-dynamic-compressor-(1)
LM13700-dynamic-compressor-(12)
LM13700-dynamic-compressor-(16)
LM13700-dynamic-compressor-(2)
LM13700-dynamic-compressor-(6)
LM13700-dynamic-compressor-(8)
LM13700-dynamic-compressor-(10)
comp

This is a four-controls guitar dynamic compressor I built after reading an article on The Valve Wizard.
The circuitry is mostly based on the OTA LM13700, driven by an envelope detector and put in the feedback loop of an opamp.
This means an advantage versus other classic dynacomps, because it works in a reverse manner, increasing the overall gain by lowering its own (and noise too).
I wanted to build a compact factory-look pedal entirely by hand, using simple hand tools.
The idea was to assemble the PCB and its components in a self-supporting block, with no flying components.
PCB is designed from scratch using KiCad/Gerber.
Here’s the results after painting, decals labeling and varnish coating.
It works great and what surprised me is it was completely quiet even without the metal shell during tests.
Audio samples coming soon!

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