There's no hiss at all with my late 2008 15-inch MacBook Pro... ...but there is an annoying pop every time the audio driver enables/disables the DAC, presumabl

There's no hiss at all with my late 2008 15-inch MacBook Pro... ...but there is an annoying pop every time the audio driver enables/disables the DAC, presumably for power savings reasons. (One day I'm going to get annoyed enough to patch the driver to not do that when the laptop's on external power.)