The very idea of ballanced is to "Farris Buler...Buler...Buler" yes - cancel noise! and though there usually mabe could be negatives, sometimes you can get lucky and everything matches up and no percieved negatives. Forget the science and trust your ears.
Use amp in balanced mode in unbalanced set-up
I had isolated a hum problem to my amplifier in one channel (Ayre V-5xe whch is supposed to be sensitive to hum). For the he++ of it, I tried changing the mode from unbalanced to balanced (my set-up is unbalanced) and lo and behold....the hum went away. Has anyone experienced anything like this? I could find no sound degradation.