I got a Xonar U3 for £10 used today. It supports Optical Out (16/48Khz only though) and Dolby Headphone 7.1 with DH1, 2 and 3. It also has the capability to appear as a 7.1 Speaker Setup under Playback Devices in Windows as any product that sells virtual surround sound should. The Creative E1/3/5 don't support this when a cheap Xonar U3 does is just awful. An absolute embarassment that their headphone DAC/Amp products do not support such basic functionality as 7.1 virtual surround sound.
I have seen 1k+ DAC+amp that doesn't support Dolby Headphone or 7.1 surround sound as well. Shame on them too!
Quote:
Also Creative still don't specify important information such as Output Impedance for the Creative E1 and E3. At least they now specify the output impedance of the E5 is 2.2Ω.
...because Creative has transitionally never have that many customer that focus much on output impedance, same for most PC soundcard manufacturer. The reason for E5's output impedance being listed is exactly because we at Head-fi asked them to, after E1 and E3 release. It is, for the least, a progress. In fact, I do believe Creative was originally planning to have much higher output impedance on E5 as recommended by the chip manufacturer, but revised it before release because they have heard the feedback on Head-fi.