Sorry... the reply just struck me wrong.

In fact both are correct. The majority of folks playing music use unbalanced lines and have no problems. However, when problems with induced noise and hum occur, if nothing else solves the issue, using balanced lines may just work.

Everything in my studio is unbalanced. (Including me) And there is no hum, no interference. The fact is, both methods work fine.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.