Balanced SET Amplifier

The XLR inputs of the Lamms are for convenience - to save an owner the expense of new IC's - and not for balanced operation. By definition, single-ended-triode (SET) operation involves amplifying the entire signal with only one output device. A balanced circuit cannot be built this way, but I guess one can always install a shorted XLR input. Why don't most SET's have XLR inputs? Maybe it has to do with the tradition or purist angle.

Most of the Melody amplifiers have balanced in puts and some of them are SETs. www.melodyhifi.com

Maybe this is an opportunity to think outside the SET box. Wyred 4 Sound digital amps are sonic knockouts, energy efficient, and very reasonably priced.

I'm lusting for an SET amp and Zu Presence or Devore Gibbon Nines but my phonostage is balanced. One of the Zu guys used the Melody 300B monoblock but in push pull. The Melody line looks promising and well priced.