Something strange is going on with my sound

[Randall d]

yes sure. the only thing that keeps me wondering is that the voltage here at home doesnt seems to drop. I remember other houses that if the voltage drops i could see that in the lamps but here is really steady.

the only part I still dont understand is that the fm3 has been on since yesterday (for 24 hours almost and has not failed) it only fails and sounds bad when I cycle it. turn it off and on.

The voltage is not the only thing the Online UPS gives you. It gives you completely isolated high quality power. Isolated from the power source is the key. If the power there is "noisy" then it eliminates that. This is worlds better than just filtering. It completely eliminates ground loops, noisy power, and voltage inconsistencies because it generates a completely new source of high quality power.