Only auditioned Lehman Black Cube SE on my setup. Only 3 words can describe it versus the tube gears I have:
Bright, harsh, and thin.
I owned Marantz 7, SP-11, SA-5000, SA-2, RM-5 and all are better than the Cube in both MM and MC.
I still yet to find anything that can beat the RM4 and Citation I combo ( Cost me less than $700 altogather ) for under $3000.