Serge, you've got some really nice gear there! I'm also interested in the Luxman 590AXII... in order to simplify my system.
I hope you'll forgive me for the observations but the sound is a bit hollow and seems to lack a little body. Of course I don't know if it's the empty room, the speakers, the DAC, the cables or something else... Otherwise it seems resolute, fast, tonally rich and with a nice soundstage - as much as the video quality and the bit rate allows of course...
__________________
Amp: BAT VK-655SE
Pre-amp/Digital: exaSound e32 w UpTone JS-2 Power Supply; SOtM tX-USBultra w UpTone LPS1.2; Apple Mac Mini w UpTone DC Conversion Kit & UpTone JS-2 Power Supply; Squeezelite w Logitech Media Server 7.9.0
Speakers: Triangle Magellan Cello II
Cables: AudioQuest WEL XLR, AudioQuest Everest, AudioQuest Hurricane HC, AudioQuest NRG-1000, AudioQuest Diamond USB
Rack: Solid Tech Hybrid
Tweaks: Omicron Stabilizzatore Armonico & Gold Evolution SE; IsoTek Sigmas GII w Optimum EVO3; Furutech FT-SWS (R) AC Outlet; Synergistic Research Blue Quantum Fuse