Just a few but be sure to give tubes at least one hundred hours or so to burn-n and open up in order to appreciate the sq.
Try Camille Saint-Saens Organ Symphony (wide frequency range including a 16 hz bass fundamental that only whales can hear but people can feel :)
As mentioned previously Steely Dan-Aja-great musicians in a tight band
Verdi-Requiem-allows your rig to show it ability to show it vocal chops from basso profondo to soprano along with transients from full orchestral passages.
Miles Davis-Kind of Blue- trumpet,tenor sax,bass,drums-piano, transients travel the full range. One of the great assemblages of jazz musicians, Adderley, Chambers,Cobb,Coltrane,Evans and Kelly ever.
Bruckner Symphony #4-Zibin Mehta conducting ((Romantic version II)
Enjoy the music