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It is balanced or not?

Hello everyone, I am new to this page, I thank the Audiogon team for allowing me to be here with you, I have a question: I have the preamp and DAC: "Emotiva Differential Reference XDA-1" it has the following digital inputs: "S/PDIF (optical and coaxial) and AES/EBU (XLR)", the XDA-1 has balanced outputs for an speakers amplifier, inside it has the amplifier: "Texas Instruments Burr Brown OPA2134" and I want to know if it really works balanced; the XDA-1 has the DAC: "Analog Devices AD1955" inside. thanks
joser9616
kijanki's avatar
kijanki
4,426 posts
 
AD1955 has differential current output (two current output pins).  In order to make differential voltage output (balanced output) it needs two current to voltage converters.  OPA2134, being very low bias current dual amp, is good candidate for that.
joser9616 OP
29 posts
 
I read that from Burr Brown OPA2134 in its specs. but I did not understand very well, so I was in doubt that if that could mean if it was balanced, thank you very much for getting me out of doubt.
erik_squires
16,011 posts
 
Op amps are not balanced when a single op amp is used.

They can be used to output a balanced signal by either outputting to a transformer os using two opamp sections.


kijanki's avatar
kijanki
4,426 posts
 
joser9616,  you're welcome.  OPA2134 has also high current drive ability making it a good choice for an output amp (combined function of I/V converter and output driver). 
joser9616 OP
29 posts
 
I have the Emotiva conected to a 2 mono Crown D-75 balanced.
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