PEOPLE it depends on the equipment. On how its designed, wither the circuitry is designed balanced or not. For example even thougth Spectral has balanced out. Every notice why all dealers use RCA? Because its designed for single ended. They just provided the XLR because uninformed people out there automatically assume that if it doesn't have XLR its not good. Look at Conrad-Johnson. They ONLY have single ended even in their $15,000 Art preamp. And it still sounds damn good. Some big name brands like Audio Research, Krell (bright and sucks) and Mark Levinson (boring and not worth the price) sound better balanced. If your components do or not depends on your equipment. Ask your dealer.