Here it their latest statement. I'm going to email them, and see if i can get a replacement unit. Or at least some assurance that my unit wont be damaged with normal usage within their guidelines. MANUFACTURING NOTE: As Weber re-releases the Bias Rite units, we have upgraded some of the components. However, in order to remain sensitive enough to provide accurate reading, some parts are still very delicate. DO NOT attempt to play your guitar while the Bias Rite adapters are inserted. Doing so may very well cause the current to exceed acceptable tolerance for some of the components and damage the unit. Remember, you are only using the Bias Rite to adjust the IDLE current, which means the current level when no signal is being put through the amp.