I've never heard this Sony unit, but I'd test the premise that you will perceive an audible improvement before you invest. Perhaps you can get someone (a store, a friend...) to loan you a higher quality unit. Insert it in your system and see if you really think there's an improvement. Depending on the resolution of your speakers, and perhaps the noise levels and drive characteristics of your associated electronics, you may not be able to hear a difference. Don't just assume the Sony is inadequate, is my advice.