QUOTE (uZi @ Jun 8 2008, 13:00)

Ah ok! But now what's the difference between an external USB soundcard and a USB DAC ? Isn't it finally the same thing?
By the way I'm especially after a soundcard because:
1. Limited budget 450€
2. My current soundcard is slowly dying (see
http://www.hydrogenaudio.org/forums/index....howtopic=62388)3. My travelling quite a lot, a will move out to another city in the couple of month
I still don't if I will go for 5.1 soundsystem or only 2 regular speakers, but what solution it able to handle both solutions?
An USB DAC is just for audio output. DAC = Digital to Analog Converter
An USB Soundcard also includes an ADC (Analog to Digital Converter - for Mic, Line In, S/PDIF In) and MIDI Ports.
If your Laptop soundcard is dying, then I would get an USB Soundcard. Even if you aren't using the recording fuction now, you never know if you will need it (Just think about Skype, Teamspeak, ripping a vinyl record, ...). The EMU 0404 gets a lot of praise here and I personaly have good experience with the M-Audio Audiophile USB. Other choices are Edirol UA-1 or Griffin Powerwave. They all fit easily in your budget. If you want to go real cheap, then there is also stuff like the Behringer UCA-202 U-Control or even cheaper stuff like SPEED-LINK UltraPortable Audio Card.
A 5.1 setup isn't very portable. A good subwoofer is huge. When you are traveling a lot, then this might become inconveniant very quickly. I got a quiet good 2.1 setup, but I prefer most good circumaural headphone over it.