If I recall in the Stereophile review of this and other Ayre players they claim a SIGNIFICANT sound quality difference between the SE and balanced outputs (balanced being better) BUT you would need to have a true balanced preamp/integrated amp to hear the difference (as per Lak's post).
Again this is per a review not any direct experience and would require you to purchase a different preamp.
Again this is per a review not any direct experience and would require you to purchase a different preamp.