Balanced cables have additional circuitry to cancel out noise. They originated in professional recording applications where there was a great potential for noise interference. I would suspect that your equipment has rca connections only. Rca's have the little round connectors that are a little bigger than a pencil head. Balanced connectors are a little smaller than a dime, and have a locking tab. Balanced circuitry is supposed to sound better due to this quietness. I have never directly a/b'd them, but one of my friends who has an extremely high end system (75K worth in a treated room) commented that he could not tell the difference. If you have balanced input/outputs, buy balanced cables, otherwise buy RCA's.
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