# Baxandall tone circuit passes signal through but does not alter its tone

I added an Baxandall active tone circuit to an existing overdrive circuit and I'm having an issue. The signal passes through the circuit/opamp and out to my volume control but the bass and treble controls don't affect the signal at all, it seems as if the signal is completely bypassing the pots. What do I have wrong that would be causing this? Thanks for any insight!

• I fail to see how your battery powers anything and also, TL071 have a recommended minimum power range of +/- 5 volts. Jul 15 '19 at 14:42

• @KevinWhite the DC feedback gain $A\beta$ of IC1 is 1, but the DC bias voltage applied to the $V_{in_+}$ non inverting input is the GND Voltage and brings the output down to the same level, collapsing the output dynamic range. As correctly noted by Sunnyskyguy, if you connect $V_{in_+}$ to a $\frac{1}{2}V_+$ level, the correct dynamic range is restored. Jul 15 '19 at 15:08