Thoughts on the
2021 R27's DAC section with the upgraded clocks and USB interface? - seeing that it's an AIO with an R-8 DAC section (albeit I assume not the MK2). If this is a feasible option without too much compromise on the DAC section over the R-8 MK2 then it means I would not lose the Master 9 amp section option when I sell my NOS11.
I forgot to mention that in my Audio-GD journey I also had the R28 but I changed to the NOS11 because I found the R28's amp section rather flat, it just wasn't meeting my expectations (although I quite enjoyed its DAC section). Thankfully both the NOS11 DAC and amp sections were worthwhile upgrades from the R28 - moreso the amp than the DAC - and have kept me happy since (the R28 is basically an AIO R1 DAC / NFB1 amp).