Sounds like the sales pitch of an ignorant sellrat.
Balanced to SE can only be done one of two ways, using a transformer or active devices. A transformer would be useful to a sales pitch to many customers and as it wasn't mentioned, one can assume it is active. Active falls into two categories; opamp and discrete. The latter is more difficult and expensive to do and has a cache amongst 'phools, I'd be surprised if the marketing literature from the manufacturer didn't mention it prominently, like Marantz with the HDAM. So my guess is it uses an opamp, probably a single device.
To do a balanced output is similar, either transformer or active. As almost every audio device (line level) would have an opamp as an output buffer, simply add an inverting stage to make the opposite polarity, voila, single ended and balanced outputs.