This is a lot of heat, these power levels are not viable for a tube amp.
I tried the DAC in the 5805 last night and it is fabulous. It sounds better than my Luxman in many respects. It is more detailed and clear. The Luxman is a little warmer and has some bass bloom which I like but the internal DAC sounds so good. I will probably keep both and just use either one based on my tastes that day and the kind of music played.I am going to try the internal phono preamp tonight. I doubt that it will compete with my Gold Note phono pre.