Audio switch using NMOS (low level signal)



A common-emitter amplifier can include a bypass capacitor from the emitter to ground, resulting in considerable extra gain (1000uF in the picture). What happens if the bypass capacitor is switched "ON" and "OFF" using an N-channel MOSFET, as shown in the picture? Will the MOSFET produce any distortions to the audio signal?

I've read that MOSFETs alone are not good switches for audio signals, particularly when voltage goes above 0.6V and the FET is OFF. But voltage here going through the bypass capacitor would be max. 200mV.

PD: Spice simulations and breadboarding seem to work fine, but I'm still unsure.

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Phaser Schematic

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