Mono audio output on GTA02?

[Ben Burdette]

I was looking at the GTA02 hardware spec on the wiki, and its looking 
(to me) like mono only output.  According to this:

http://wiki.openmoko.org/wiki/Neo1973_Audio_Subsystem

The neo1973 has a stereo LM4857 amplifier, which drives the stereo 
speakers, mono earpiece, and (presumably stereo) headphones.  However, 
on the freerunner it appears that it has been changed to the LM4853 
instead, a mono amplifier.  That implies that the headphone output is 
now mono and not stereo.  Unless I'm missing something?