I've had the amp for almost 1 and 1/2 years and I've noticed that i've been getting shocked, literialy, by it. It usualy happenes after i listen and then get up to turn it off. I press the button and I get shocked. I don't know if it's just static or something else. But I fell that this shock is a little more painful then just static. Sometimes when i go to press the button on the amp I can actualy see the blue/white electric on the tip of my finger. Maybe it's related to the cold weather? I can usualy avoid getting shocked if i bang my hand on the metal rack then touch the amp.