A short press of a button and you hear through headphones and then a pressure box and let the sound out of the speakers. No more Raustabben from full screen applications more, no need to adjust in various drivers and the best, it consumes no Storm. The cable is long enough, ranging from computers to on the desktop. We only know to appreciate the part, if you had it. Before that, I would never have thought such a thing was worth even remotely useful or the money.
The reason why I write a review but is that here people say it would sound quality lost. In short: No, not a piece. I have a high quality studio headphones from Beyerdynamic and a very good sound card. I can assure you, it sounds right.
The headset or microphone function I can not judge because I do not own a microphone. Possible that here appear sound differences, I think it is improbable.