DIY Line Out Cable - Works!

@14124all wrote:
calv, Thanks for the excellent explanation! I have only dealt with DAC operation on industrial motor control and was not aware of the audio amp workings. What you have presented explains why the Griffin Dock output will increase from the Fuze volume control to about 25 or 30 percent and then sits at that peak with no more increase all the way up. My lineout cable is probably overdriving the pin7 input and that is why I get a noticeable volume increase over the dock. I’m not hearing audio distortion on a Klipsch Promedia (did hear some clicks at times which may be clipping), but it probably is there and would be heard on axon’s DT880s. I’ll drop the voltage feed to pin7 with a resistor instead of a straight jumper.

Interesting.  What is the voltage you’re getting on the line-out?  Is it the same as whatever you feed pin-7?