> ...I did not take into consideration the 8-ohm build-out 
> resistance that Lyle just discussed.  Those build-out resistors do not 
> appear on the headphone amp schematics (page 28/52) so until today, I doubt 
> anyone else knew they existed <g>. 

They are in the originally released October 2007 schematic set (page 32 
of 43) and marked as K3 DSP IF Rev A1 sheet 7 of 9.

Likewise, they appear on the current (October 2008) schematic set (page 
32 of 52) and marked as K3 DSP IF Rev A1 sheet 7 of 9.

I expect they will still be in the next released set of schematics, too :-)

73,

Lyle KK7P

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