I have just bought an Alesis SR-16 and when I tap the pads or play the demo, the sound is extremely low and so distorted that I can hardly identify the different voices. Whether I connect the output to my amplifier or into my PC line in, I get the same problem. I have tried different cables, tried turning the volume down as well as up on both the drum machine and the speakers / amplifier, but none of it helps at all. Please help!!!