These cables are good and know that if it is copper that OHC :: lescompose this type of copper has a high velocity power :: the price ((very interesting)), I wonder if that is the OHC copper which is the material used? ... Then, be careful because by connecting the sockets around the connector itself touch? .There it comes to the mass of each voice :: left and right the amplified output :: these masses are normally separated :: touch if it becomes a common ground, while in very good amp should be separated :: so sometimes interference between the two voices :: left and right respectively .The sockets are sometimes so prochent that said sleeves ((here silver)) touch .Penser to isolate with adesive tape from the color of your choice.