On 2006-03-15, GuitarPsych wrote:

I have a very simple circuit that I run an electric guitar signal
through and I'm thinking of modifying it from a 1.5 V battery to a 9V
battery.

What modifications do I need to do to the circuit?

the easiest modification would be to modify the power input to reduce the
voltage to 1.5V, but all that will do is increase your battery bill.

(I am obviously a beginner).

why are you wanting to modify it?

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Bye.
Jasen