My Bottlehead DH/SET 2A3 mono blocks weigh approx. 12 pounds each.
However, accessing them (bottom shelf of a rack located in a hallway linen closet) is not an easy task for me.
My pilot SA-232 clocks in @ around 20 pounds as did my old Mac 30 mono blocks (per unit).
My Dynaco Stereo 70's weighed about the same as a case of wine (30 pounds?).
The only heavy gear I've used were Altec VOTT's in the mid 70s (after a friend built new plywood cabs for them they became unbearably heavy and I returned them to my cousin to use in his bar/restaurant).
It took 5 of us to hang them from the ceiling in the bar area and the other 4 guys were as strong as Oxen (I connected the chains;-).
DeKay