How to get TRUE balanced input / output for a pre-amp?

Dear brothers,

I am wondering HOW I can get a say, Marantz 7 to have TRUE balanced output.

Some time ago, I read through a passage with this guy using TWO Marantz 7 or alike PCB together to produce a TRUE balanced input / output M7.

Anyone knows HOW?

CAT

Dear Alfcat, It must look like this.

Dear Koifarm,

Wow .... just this simple? I thought it is more complicated .. ha.ha.. Then it is easy to do as long as I have separate power supply for them and a large enough case.

Many thanks.

CAT