is there anything on the market like an adaptor that would allow me to plug two banana plugs into one socket on the back of my amp - i currently have some cables that i use to biamp my speakers - some of the new amps i am looking at only have one set of terminals on the back and i don't really want to send my cable back to chord to be altered as i plan to add another power amp in the future but can't afford to do it all in one go - is there just some kine of gold adaptor or anything on the market that will make 2 plugs go in to 1 socket safely - quickly googled it but nothing came up.