I ran my M60s on a couple of concrete blocks for a while, but retired the blocks when I moved to a new house with a soft pine floor in the HT area.

I will probably end up either making some risers or (hopefully) finding some kind of small solid storage unit already made that I can put the 60s on. The 60s are a bit lower than I would like relative to the screen.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8