I got this crunch amp but wen i connect the rca's into the inputs, no sound/signal comes from the speaker outputs, what could this mean. If anybody could help me plz
DMM is short 4 digital multi-meter, you can pick up a cheapy for a couple bucks. It will save you tons of time and money during installation & troubleshooting you're system. Make sure the DMM can check continuity, this will help determine if there are any opens in the signal path back to the amp.