The input signal conditioning COMPRESSOR and ADAPTIVE FILTER circuit from Electro Harmonix EH 8000 Guitar Synthesizer, breadboard, schematics and signals on oscilloscope. The CA3094 was substituted by CA3080. <br /><br /><br />Facebook: <a href="https://www.facebook.com/Sbranvlztronics/" target="_blank" rel="nofollow">https://www.facebook.com/Sbranvlztronics/</a><br /><br /><br />Thanks for watching.<br />...<br /><a href="https://www.youtube.com/watch?v=CjAdcDabl0A" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=CjAdcDabl0A</a>