It's been recommended in the Fun not to use the dac output at all. The preamp output is buffered and sound perfect. The dac out sounds harsh and very digital. That being said Kingwa recently made a new dac module for the Fun, using the WM8741. It's also gonna be the stock dac module for the Fun version a from here on out. He says it's less harsh than the ad1852. So it may make the dac output usable... maybe :)
From the way kingwa described the sound of the new dac module it definitley sounded like the thing to fix the one complaint people had about the Fun without losing the detail or dynamics that the AD1852.
Edited by muad - 8/6/10 at 10:36am