ISTHERE AN EQ IN THIS UNIT SO I CAN FINETUNE THE TYPE OF TONE AND TENACITY I AM LOOKING FOR IN A DEEP HEAVY DISTORTION SOUND(ALA METALLICA MACHINE HEAD SKINLAB)THAT I CAN GET OUT OF SAY MY HALF STACK.AND WHAT IS THE OVERALL REVIEW ON THIS UNIT FOR I HAD HEARD IT HAS A KILLER DISTORTION SOUND IN IT BETTER AND CHEAPER THAN SAY A POD