Abstract: A device is disclosed to provide balanced distortion in a musical instrument and to emulate the sound of a tube amplifier when overdriven. The device distorts, clips, and limits, selectively, an input audio signal. The circuit includes: an input stage to receive the input audio signal, remain linear, and maintain balanced outputs, and to split the input audio signal into an inverting, negative path and a non-inverting, positive path; an inverting, negative path balanced distortion circuit to receive an inverting, negative path input; a non-inverting, positive path balanced distortion circuit to receive a non-inverting, positive path input; and an output stage, wherein the output stage combines a pair of differential inputs to produce an output audio signal. The audio distortion circuit cancels incoming asymmetries in the output stage from the combined pair of differential inputs and produces the output audio signal as symmetric.