Ooops...I never got back to this thread until today! Anyway, I love my 9000. Compared to the Primaluna, it has far better bass and overall transparency. Oh, it might lack that last ounce of magical tube mid-range, but it's a very slight difference. It certainly isn't cold and sterile like many SS amps. The DAC will play everything I throw at it, but when playing hi-res files I get a brief fade-in (seems to happen when the sample rate changes) and when streaming Qobuz and Tidal via Audivrana+, I get a faint burst of white noise instead of the fade in. Neither is great and neither happens when I use the DAC in my Esoteric K-03. I understand a firmware update (to version 1.0.3) might help, but I haven't investigated that option yet. Otherwise, the 9000 in a beast! (I did have to buy a new rack to accommodate its depth!)