Just because you have balance inputs and outputs does not mean you have a balanced system. If your gear is truly balanced from input to out put, then yes a good balance cable can sound better.
Balanced XLR cables
I am purchasing a preamp with balanced xlr connections. some of my other gear has xlr terminals but never used them for lack of source input until now with the preamp. is there a big difference in xlr's? not trying to start a cable war discussion, just dont want to spend an arm / leg. is $50 for a 3 ft cable on the cheap side? i havr always found Mogami cables good value. recommendations please