Balanced vs Non-Balanced XLR?

True differentially balanced components eliminate 2nd order harmonics, at least internally. What the speaker does is another story. From a purist point of view, distortion is distortion and the manufacturers that build this way must feel it's worthwhile to nearly double the parts count. It's not a fad.

We don't hear most distortion intrisically. Our ears and brains translate those into frequency anomolies. Personally, I've come to believe that we all prefer or expect some degree of distortion.

The topology is not an end, it's a means to an end. While it's reasonable to assume similar results from similar topology, attributing results purely to topology is idealistic. IOW, you get what you get.

In 'pro audio' the term, "servo-balanced" is often used in relation to conversion to single-ended internally. I happen to own an active crossover that uses this method in an otherwise fully balanced system from source to amps. Balanced crossovers are rare and expensive. Rarely, transformers are still used for this purpose.

There are fully balanced integrated's. Ayre and the Chinese brands, like Jungson, come immediately to mind. And if Emotiva can do it, it's not always a function of cost.

The whole perception with Balanced compared to Non-Balanced is that the total over response in signal should increase by 6bd if you using everything Balanced through your whole systen but on top of that it also decreases the noise by 6db. All professional studios use full balance including speakers for that matter. When it comes to your amp whether its a tube or solid state, the perception of sound will be dictated primaraly of your pre-amp and power amp and how much output it is willing to take and how stable the load is. Nordost and Siltech I use all the time to test the differences between them with certain amps and pre-amps, sonically with certain balance cables there is more finer detail, though everybodys hearing is different so you have to hear it in a controlled environment which I do in where I work.

thank you for all response!