Yeah, I did. Immediately noticed the difference in sound quality too, but then again I have pretty decent speakers. I have the Audigy X-Gamer, but I recently bought an OEM version as well. The design is basically the same, but there are some differences. Right away, the OEM has color-coded plastic jacks while the retail version has gold plated ones. Obviously, the OEM is devoid of software other than the driver CD.