I had an Early model with led lights for safe zone.
It was constantly over that and under. The only thing I know is my firewire mixer turns off when the power drops and the furman did nothing.
However, mind was "self sacrificing" so if a bolt of lightning hit the transformer it would cook the Furman but not pass the current to my studio.
Im told that playing at bars the refrigerator compressors come on and off and it comes out your tube amps but the furman can stop that.
A guy came over and offered me $120 for mine and I jumped on it.
Nothing changed, everything is the same. (I have bad dirty fluctuating power)
But there so cheap.
One story I was reading was during recording his furman lit up like an ark welder, blue smoke and a loud pop as the unit successfully prevented a "catastrophic" surge into his tube amp.
Mine was $50 on ebay, thats so cheap it cant hurt! Its as much as a blanking space for your rack.
