This small converter / headphone amplifier is very well done, and really flattering appearance. Getting started is simple, and the control system (very) simple but effective. I bought this little device to enhance the audio output of my Netbook Asus, the sound card is somewhat basic. I'm a musician (classical) fairly picky about sound, but they are not maniac Hi-FI. When I connected the unit to the USB port, it has installed itself by taking hold of the sound output (Windoxs Xp). I plugged my headphones on (Sennheiser eH 350 Pro) and I am still amazed: the sound had nothing in common! It was clear, detailed, comprehensive, airy! So I tried with my desktop computer (WIndows 7/64). Like this: it turned installed itself and by comparison, the sound card in my computer seemed flat and veiled. So, I never leaves this small object, and all the colleagues that I did hear were venchantés, and considered his purchase, dautant the very reasonable price. If you like classical music and with a good helmet: give him this object, you will not regret it. For other music genres, I confess I do not know: I do not listen in. So I can help you.
