Without exageration, it's a waste of money and more importantly time, and worse if you depend on it without Testing. i was in a very awkward situation where i was performing live, All spares ones that still work Were faulty and crowd was staring at me, i know kinda my fault i didn't test my Full setup before heading out, But still. you buy Somthing new and you already own like 2, the very least u expect one of them to work.... none of em worked properly... had to cancle because of JACK CABLES. thanks SSSnake......