Can a Bluesound Node's Streamer Be Bypassed and be used as an External Dac?

Can I bypass the streamer on the Bluesound Node and use it as an external DAC?

I just bought a Aurrender N200 streamer.  It's current paired with an older external DAC.  I can barely listen to my system now because of ear fatigue!  The higher frequencies are shrill!  Previously, I used the Bluesound Node and enjoyed it and could listen and moderate volume levels for hours. 

I want to confirm that it's the older DAC is the problem.  Can I bypass the streamer on the Bluesound Node and use it as an external DAC?

Thanks!