Buy a hand truck; it's cheaper than physiotherapy.
Kent English of Pass Labs once had to move BIG amps up a flight of stairs. He walked them up it (in boxes, obviously), end over end. Not the easiest, but doable - as long as you don't let it slip!
Kent English of Pass Labs once had to move BIG amps up a flight of stairs. He walked them up it (in boxes, obviously), end over end. Not the easiest, but doable - as long as you don't let it slip!