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[Paul Joppa]

You can also do a balanced out like the BeePre, matching the impedance to ground of the two sides. Assuming it is feeding a differential input of the next stage, this is perfectly good and meets the definition used for balanced interconnects.

It is not necessary to have equal and opposite signals on a balanced line. That would be push-pull, not the same thing. This semantic confusion is very widespread.

 

[Doc B]

At this juncture we are not considering design changes or additions to the DAC. I always want to ask someone why they want a balanced output in the first place, for precisely the reason PJ offers, most audiophiles confuse terminology. There are good reasons to use balanced connections in some cases. I find it helps the bass with speaker connections to transformer outputs of tube amps, though I'm probably the only guy doing that and I can't explain why it seems to do what it does. At line level where the issue usually comes up I seem to prefer the single ended connection made with properly shielded cable over the additional circuitry and components necessary to make inputs and outputs balanced. I will note that we went to some trouble incorporating the ability to use balanced connections on the BeePre and it seems like we mostly hear about people putting extra RCAs where the XLRs are to create more single ended outputs.