Michael Watterson ha scritto:

>>   
> you don't need a transformer unless galvanic isolation is required. You 
> can generate balanced 600 Ohm source just with amps and resistors. It's 
> even possible on lines with 48V power (suitable capacitors).
> 

Yeah, Michael, I gave for granted that I need it. Tomorrow I'll look to 
the specs and will see; I also have one "compatible" device in here so I 
can disassemble it :)
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