Two DACs

Hi ... I'd like to run two of same dacs for my stereo, but thought better ask first.
I have a Cambridge Dac Magic 200m. Upgrading would be too expensive for me, but could get another 200m. I'm using mono blocks so thought one dac per channel might be advantageous.
Zene
 
Would you use one channel only, from each DAC? If YES, how would you split the digital signal?

Anyway, the best you can do at the moment is to utilise balanced outputs from a single DAC, and feed balanced left and right signals into (hopefully) balanced inputs on your monoblocks.

You can not turn a stereo DAC (box) into a mono. You could look for a dual differential DAC (IC) architecture, though... something like the one shown below...?

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