I want to wait until I get the tonelab none the less....and on the one tha is broken, it is a simple fix...the tip of the 1/4 input jack has broken. this piece is attatched by 2 ribbon cables to the rest of the unit. I just unhooked the input section which holds the instrument input, the line input, and the button that lets you select between the 2, and went to a local dealer to get the part ordered. to clear things up a bit more...the unit still worked....it just didnt hold the guitar cable very tightly....