I have a used Arc Mini that was used for about 2 months and I switched to Focal amps. It has one of the speaker output screws that wasn't tightening down all the way so it was tapped and a larger tapered screw waa put in its place (I took a close up pic of it). I assure you that it's good now and all the others screws are good. lt comes in the box with instructions but is missing the high level input adapter harmess (which most people wouldn't use anyway).

 

bump!!!