Mad Catz launched the F.R.E.Q. 5 gaming headset just over a year ago, and it's already skipping two model numbers ahead to the F.R.E.Q. 7. What justifies the out-of-order sequencing? The Dolby Pro Logic IIx processing, mostly. The pseudo-surround effect widens stereo and 5.1-channel signals to 7.1 channels for gamers who want the greater audio precision. Appropriately enough for its name, the F.R.E.Q. 7 also brings software-driven EQ to emphasize voice or music in computer games, as well as separate volume adj