Sean is right. You will hear great noise from the Sniffer, but if you buy the now discontinued AudioPrism plug-ins to depress it, you will be very unhappy with your sound. I did have the Sniffer and 12 plug-ins at one time. Gradually, I removed them or relocated them to remote parts of my house away from my system. The fewer plug-ins I used and the further the few remaining were from my electronics, the better was the sound. Jim Weil of Sound Applications explained to me why this system does not work. Try it, however, as I expect we all have to prove it to ourselves.