This assumes that the balanced system is referenced to ground and not 2.5v.
if it is referenced to 2.5v, any D.C. offset will affect the bias of the amp making it very unhappy.
Without knowing how the DAC and the amp is wired it is hard to say what is needed to convert the balanced signal to single ended. That amp runs at a couple hundred volts making it capable of blowing up parts it you get it wrong.
Another factor is what speaker are you trying to drive? A set 45 only puts out 1.5 to 2 watts
if it is referenced to 2.5v, any D.C. offset will affect the bias of the amp making it very unhappy.
Without knowing how the DAC and the amp is wired it is hard to say what is needed to convert the balanced signal to single ended. That amp runs at a couple hundred volts making it capable of blowing up parts it you get it wrong.
Another factor is what speaker are you trying to drive? A set 45 only puts out 1.5 to 2 watts