TheDecameron
Unicorns fart glitter.
I'm no engineer, but I believe plenty of designers produce balanced, zero-feedback circuits, like Charles Hansen of Ayre:
http://www.ayre.com/technology.htm
I have an Ayre P-5xe phono preamp that I run balanced in and out and it sounds noticeably cleaner, clearer and more dynamic in balanced mode than single-ended.
That is a formidable phono stage.