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I've started using 22uF MLCC SMD caps for my output coupling capacitors. I know some of the physics behind them from the capacitance lowers as voltage across?them increases. I have not had issues and very good results. Meaning no effect on distortion etc. Anyone else using?these or experimenting with them??

For an output of my OPA mic circuit the 22uF gives me a 3dB down point with?most mic pre's of about 9Hz.