(12-18-2017, 10:49 PM)cr2016 Wrote: Do you mean that the jack output from the pine64 is not supposed to work with standard headphone jacks?
you should spend some time searching the forum as your questions have already been answered many time before. but, to follow up, the "standard" headphone jack has changed in the last 2 years with many manufacturers going with the new "standard" style jack/plug. so, the old "standard" jack will not work with the new "standard" plug although some users have pointed out that it may be possible if you screw around with the plug. but that may damage the jack.
otherwise, look on page 8 of 19, of the schematic,
http://files.pine64.org/doc/Pine%20A64%2...elease.pdf
