Wouldn't matching the 8341 to a Genelec SAM subwoofer like the 7370a solve your subwoofer integration thanks to GLM room correction? It's probably the best subwoofer integration you can get with the 8341.I only really bought the SHD for DIRAC which I don't use as I prefer the inbuilt SAM software of the 8341's and to handle my subs. Seen as though I'm not using DIRAC, it's a whole lot of machine for what I'm using it for!
Any thoughts?
Digital Source >AES/EBU>7370a>8341
I believe GLM subwoofer integration will offer more benefits than any higher SINAD from replacing your DAC.