Is there a superiour way to connect speaker wires to my denon 3802 amp, than the usual copper wire twisted thread end that I use. Can I use some sort of "banana plug" or something, because it seems that some of the wire ends are awfully close to each other and might leak sound across, and also copper does "rust" in a way and I would think that it wouldn´t work properly then. I live in Iceland and there isn´t really a lot available here, there is a store that has some monster cable stuff though, and I bought a banana plug that I put on the speaker wire end, but it doesn´t fit into the amp(the end is too wide), and not even in the speakers (the plug fits butthe end of the wire cant angle enough. ???