guitar pickup pre / phase flipper


i am designing an instrument where i need a preamplifier stage for a guitar pickup, with an arduino controlled CMOS switch that can flip the phase of the buffered/amplified signal.

the switch needs to be a CMOS (i'm using a 4066) for various reasons - so i came up with this circuit combining ideas i found on the internet... it uses both channels of a TL072 IC.

will this design be able to do what i want it to do? i'd love to hear your thoughts on the idea!

thanks for your help, dataplex

Put a resistor between "switch" and op amp.