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?
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