I bought this product as new (450) for plugging my ear to the receiver.
When the product arrived, he was in good condition, nothing suspicious from the fact that it is delivered without invoice.
By plugging, nothing to report it works perfectly.
But when I disconnected the end of the jack got stuck in the amp. I do not tell you what a pain it took to remove it but the jack is no longer used to manipulate the strength (or even my amp).
I certainly do not recommend this product, the seller will be someone who is not sure which is build and dishonest.