If you want to run a balanced line to your amp because of distance or a hostile sonic environment but don't have balanced inputs on your amp, you can. Simply use a Jensen PC2-XR at the amp end. It's a passive device that easily meets audiophile standards and has a 4:1 stepdown transformer that outputs to unbalanced RCAs. It's also a isolation transformer, so between the balanced interconnects and the PC2-XR, you won't have any noise.