Originally Posted by Armaegis
Something odd going on with the output impedance of the DAC-100 and HAP-100. There must be a resistor in parallel with the output jack. I wonder if they're using something akin to their speaker amp architecture but with an output resistor in parallel (and probably another in series) much like we'd see on a speaker tap for headphone use.
I could be that way, but not sure. I know from past discussions that they like to have some degree of protection on the output jack in case of a problem, and they found that when tuning the amp to work best with HD800 that the current output impedance sounded best.
A lot of people say if the output impedance is <1 ohm that you can use any low or high impedance phone with it, but I've read people's comments that their 1 ohm mod on their DACmini is slightly colder and more analytical sounding. You don't want that with an HD800.
What surprised me was how much better the LCD-2 rev2 sound with the DAC-100 than the LCD-2 rev1 that I used to have. While the higher output impedance makes the $300 V-MODA M-100 sound a little boomy, it's just fine with the much more expensive HD800 and LCD-2 rev2.