overall it would be just about the same cost to upgrade the 2.1 to balanced outputs as it would to sell the 2.1 and get a 3.1 with balanced.
the cost of the upgrade components, installation, and shipping the unit back and forth, not to mention the inconvenience of being without a DAC for a couple of weeks, turn out very close to just getting a 3.1 balanced made new.
the cost of the upgrade components, installation, and shipping the unit back and forth, not to mention the inconvenience of being without a DAC for a couple of weeks, turn out very close to just getting a 3.1 balanced made new.