Regarding those resistors and their application, I'm not sure of the benefits entirely in comparison, or if they would be beneficial to add...it does look similar to HiFiMan's own adapter posted by wuwhere earlier in this thread:
If I'm reading this right, it seems as though they used 10ohm resistors to 'absorb' some of the current?
The ol' hifiman box. The hifiman box does the same thing as Mal's little contraption, in effect. It puts the resistors in line with the signal. I believe there was some looking into that box and people were a little disappointed as it lowered the SQ of the sound signal. I was wondering what would happen if they were in parallel, and not series. Anyone help ?