I don't see any reason to change the potentiometers. Increasing the power supply voltage increases the headroom. The sound will change because there will be less distortion from opamp saturation. You will also be able to overdrive your amplifier even harder.
I don't see any reason to change the potentiometers. Increasing the power supply voltage increases the headroom. The sound will change because there will be less distortion from opamp saturation. You will also be able to overdrive your amplifier even harder.