The primary benefit of balanced amplification is twice the output voltage rails for a given power source, without having to use a DC-to-DC converter to achieve this. In portable devices where power supplies are limited, this is an important benefit. In other words, more output power to the...

Balanced amplification is something entirely different. There are no out-of-phase signals sent down the line, and there is no cancellation of induced noise in the wire. Rather, instead of the L & R amp channels sharing a common ground and the amp only driving one pole of each driver so to speak...

The purpose of balanced line level audio cables is to reduce noise induced into cables. The signal is sent down the line both in-phase and out of phase, plus a common ground (hence the 3-pins). At the receiving end, the out-of-phase version of the signal is flipped back into phase. This inverts...

FYI, the link you posted irt what "balanced" is has nothing at all to do with balanced headphone amplification. That article refers to balanced line level cables. The same word used to describe something completely different.