Patent ID: 8855335

Claim:
An audio amplification circuit comprising: an input terminal for receipt of an audio input signal, an attenuator coupled to the input terminal for providing an attenuated audio input signal at an attenuator output, a first preamplifier comprising a first input operatively coupled to the input terminal for receipt of the audio input signal, a non-linear element coupled to the first input of the first preamplifier distorting the audio input signal at large levels, a second preamplifier comprising first and second differential inputs wherein a first differential input is operatively coupled to the attenuator output for receipt of the attenuated audio input signal and the second differential input is coupled to a feedback network, and a distortion compensation network adapted to supply a distortion compensation signal from the first input of the first preamplifier to the second differential input of the second preamplifier to reduce distortion in the output signal of the second preamplifier.