I have had both (HS Version) and yes the DACDAC 1&2 deliver. Very quiet with superior non-fatiguing resolution. SPDIF Coax input only and XLR balanced out but DAC will supply adaptors if your single ended. I like the tube NOS sound and sold mine to fund a custom built unit. Getting the parts together and hope to have it built by late spring early summer.
NOS DAC? I think your system is mirroring mine. If I remembering correctly you're using Charney(?) Single Driver Speaker and Audio Note Kit SET monoblocks right? And now you're getting a NOS DAC? Well, that's pretty much same here!
I've been using NOS DAC that I built since 2006. It was a $40 kit I picked up off eBay, no case or PSU, just PCB and parts. Based on a single Philips TDA1543 chip no line out stage after that, the chip's output go to my pre. Anyway, I'm running it off 12V batts. And I do like the sound of this little simple NOS DAC. Yes, I will say it... it sounds very analog like, I do forget that I listen to CD sometime, no bad sounding CDs still sound bad.
A few times back when we NYAR group used to be active some members bought over some new DAC to try in my system. I remembered listening to early ESS Sabra DAC and I just couldn't take it! They sounded annoying to me, especially in the high where it seems to put a bright spotlight on it.
Anyway, years later I'm still using this simple cheap TDA1543 NOS DAC in my system. Yes, I've been thinking of trying newer DAC but I've never did and now financially not possible for me. Maybe some day but I am very happy with my DAC right now.
P.S. to the OP Kinger, if financially possible do not get rid of your current DAC before you try new DACs. Newer doesn't always mean better.