When I connect my AI Clarus to my LDS 3-way 2x8, there is always a slight hissing noise while the amp is turned on. I never notice it once I am playing, but when I stop and listen, it is always there. So, enlighten me, the amplifier newbie that I am. What could this hiss be and how can I get rid of it? I want sound so clean I could eat off of it, I want complete silence when I stop playing!