FA-66 balanced output to unbalanced mixer

FA-66 have balanced outputs according to specificactions, my MG82CX mixer only has unbalanced inputs available so that I am using TS (unbalanced) pair of cables to connect FA-66-->MG82CX, but I don't know if I am missing audio quality from FA-66.

I understand the level of unbalanced signal is a little lower than balanced, and I know I can boost level of unbalanced signal coming from FA-66 using the mixer. I am worried about audio quality, not level, my question is: Should I buy a converter like this one http://www.amazon.com/For...balanced/dp/B002RMSW9U to reduce loss of audio quality?

I think I am not in a noisy environment and my pair TS cables are not too long, I don't want to spend money buying a converter; but if I am missing audio quality then I don't care, I will buy it. I hope someone can send me suggestions.

Thanks...