After having spent a few weeks with this unit - and four horribly long days trying to make it's issues go away - I'm throwing in the towel. I've tried every solution conceivable to man, and still I experience audio glitches (clicks and pops) when playing audio through this unit from my laptop. Forget trying to use Behringers own drivers. Only when using ASIO4all drivers and a very specific output, did it not produce clicks and pops, but the setup ended up being so complex, that it wasn't feasible for me to use in a professional capacity.
Also, when recording through Behringers own ASIO-drivers, the recodings end up with a very slight but completely unacceptable pre-delay. Try doing a pure recording of a hand clap and listen back to it. For a few milliseconds you hear reverb before the actual clap.
This is very likely not an issue many users will find irritating, but I've found enough people around the internet, who've had similar experiences to mine to know, that this problem is not just haunting me and my particular unit.
And I'm so bummed out about it, because this little fella has such great potential, but when it can't deliver usable results in its most basic features, it becomes uselss.
