This is not a great product - it is not compatible with the latest DVD/BlueRay players for much of the test tone sound track - many of the options do not function (Example the on-screen menu displays a pause point to test left speaker - I assume a tone is supposed to be produced, but no tone is produced - and the same applies to the other channels). It is way better to purchase a Sound Level Meter from RadioShack and use the tones generated in your receiver for speaker setup (if your AV receiver has this feature). The one useful thing is the setting of color tone/hue/contrast/balance on my flat panel LCD wide screen.