An audio output circuit includes a DAC module, a line out circuit, and a
headphone amplifier circuit. The digital to analog conversion (DAC)
module is coupled to convert an audio component of digitized multimedia
data into an analog audio signal. The line out circuit is coupled to
amplify the analog audio signal based on a line out volume setting. The
headphone amplifier is coupled to amplify the analog audio signal based
on a volume setting to produce an amplified analog audio signal.