guitar pickup pre / phase flipper

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hello

i designing instrument need preamplifier stage guitar pickup, arduino controlled cmos switch can flip phase of buffered/amplified signal.

the switch needs cmos (i'm using 4066) various reasons - came circuit combining ideas found on internet... uses both channels of tl072 ic.

http://i.imgur.com/hm4diev.jpg

will design able want do? i'd love hear thoughts on idea!

thanks help,
dataplex

put resistor between "switch" , op amp.


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