noyau wrote:I'll try to find some informations about these 4 out

AMR @ PDA Mobile
Hi,
Multiple outs (the laptop Audigy 2 ZS has

serves surround and realtime diferent monitor/output needs.
The USB2 is not as fast as the PCMCIA, hence why the Creative card may add an edge on gaming/realtime processing/latency @ high resolution and huge sample rates, in laptops w/5400 rpm or less disks, however, I mainly recommend it for use of VST instruments... for audio recording I only do if you use it at 24/96khz with great cabling.
Thus means it (the ZS) saves CPU and sys resources, but it does not necessarily adds quality, does not work on desktops, and mainly just adds awsone extra (super-hifi) confort and output speed on 8 (24/96 7.1 realtime) channels (usually you need just 2), wit also hardware realtime surround decode, which you may not need (only to try out your ac3/dts encodings), but if you do, the creative will surpass mostly anything in windows based laptops.
I do love Behringher - a hell lot - (and Edirol) though, but not for portability, and, in a laptop case - as far as I am concerned - it is a big non-argueable issue.
For PCs I recommend Emu for great quality/price ratio, but if you only use vst instruments, it makes no diference for the final render, with or without tricks need, does not have to go trough the soundcard.
Kind Regards,
AMR
http://www.alvaromrocha.com