Here, the sound card provides two modes of operation:
2 RCA outputs to control an external mixer at (and there to use the preview function) or for pure PC operation Output 1 RCA for the amplifier and output 2 (headphone jack) for previewing.
Sound quality for my needs (upscale consumer) without blemish, driver installation on netbook and laptop with me with no problems.
However, the driver CD was scratched and damaged and I had to the driver from the network load (homepage but very clear ...), so a star deduction.
For the price just for MP3 hobby DJs an absolute recommendation.
The volume controls are a useful addition, especially for the track on headphones.