Originally Posted by 3ternalDr4gon
Thanks dude, I'll check this out for sure.
One last question in regards to the amp/DAC + iPod with Rockbox...
When using an amp/DAC with a rockbox'ed iPod, does the DAC portion cease to work, or does the amp/DAC in it's entirety not work? I thought it would be cool to have an amp/DAC to use with my laptop as well as my iPod, even though it may only function as an amp
I could be wrong, but I'm pretty sure that with an amp+DAC unit the DAC (Digital-to-Analog Converter) is only functional when it receives a Digital signal (makes sense, eh? ;-) As has been explained, with an iPod, the only way to get that digital signal to an external DAC is with the original iPod firmware and a DAC that can talk to it using Apple's proprietary protocol. That would require a Digital Line Out cable from the iPod to a USB input on the DAC.
If you look at the Fostex mentioned above, it also has a 3.5mm input, but of course that's only an analog input, and thus the DAC wouldn't have anything to do.
Since Apple's protocol is proprietary, there is no way for the Rockbox firmware to output a digital signal to an external DAC. So you'd be wasting the DAC portion of a combo unit on a Rockbox'd iPod. I suppose a good combo unit could be used with a PC (USB out to DAC's USB in; DAC would appear as a USB audio device in Windows). Maybe they all do that. Don't have one.
Corrections or confirmation welcome :-)