It's not better. You'd probably have to get 2 "y" adapters. You'd need single female double male. This will mix the signal. This sort of deal was good back when we used 2 channel amps for subs, but nowadays high end rca's are just marketing hype. There really isn't a lick of difference between them.I just bought a lot of RCA's on ebay. It came with a 1CH subwoofer RCA...Would it be better than a regular 2ch set of rca's? How would I go about connecting it? just to one channel?