Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No Microphone Boost

Contrary to what it says on the packaging, it does not work well with VISTA. In fact if you spend enough time on Creatives website and on other forums you'll find that many of their products don't work well with VISTA. The biggest issue I had was that it lacked a very basic feature: Microphone Boost. Without such a feature you cannot use your mic for online gaming. Simply maxing the mic outbound volume isn't enough...the 10 or 20 db boost is required for talking volumes to be registered. I returned the product and am still looking around for a suitable Vista sound card.