Which Benchmark DAC do you have? If it's a DAC1 you might look into a DAC2 or 3 as an upgrade path. If it is a DAC2 have you installed the most recent firmware chip from Benchmark? I have a Benchmark DAC2 HGC that I am very happy with. Benchmark states the DAC2 with current firmware is close enough in preformance to the DAC3 to not justify upgrading so that was good enough for me.
I can't comment from experience regarding the Macbook but I recently upgraded from a Bluesound Node 2i to a Aurender N100H and the differences where noticable. The sound quality improved and the interface is much better than the bluOS app. I would think the biggest area for improvement on the MacBook would be in the power supply.
I can't comment from experience regarding the Macbook but I recently upgraded from a Bluesound Node 2i to a Aurender N100H and the differences where noticable. The sound quality improved and the interface is much better than the bluOS app. I would think the biggest area for improvement on the MacBook would be in the power supply.