This question is addressed to the person who have listening the dac. Will i need a preamp to get the full potential of the dac or can i simply plug it directly into my poweramp and get the best of it.

Thank you!
It depends. You'll get better sound plugging the dac directly into the amp if you don't have a really good preamp. However, as you move up the ladder in preamps, you'll get to a point where the preamp sounds better. I would first try going direct and see how you like it. You can always buy a preamp later on.
If you do not use a preamp, how are you gong to control the volume? It is a great dac, but has no volume control.