Get a 2 wheel cart like those used to move appliances. Saves backs and people from getting hernias
The 2 wheel cart is definitely a great item to have when moving heavy gear. If you don't get a true appliance type (which comes with a good strapping system) buy some straps to secure the item in case your cart takes an unexpected turn or tilt. I have been thinking about getting a hydraulic lift cart which would also be very handy at times to move stuff around and into place.
Of course timing is everything. 5 or 6 years ago at a hamfest I bought a Hallicrafters HT-33 (twin 4CX300 amp) and not more than 5 minutes after I horsed it down and through the basement walkout my neighboring farmer's two sons stopped by to say hi. They were high school defensive linemen and would have really been helpful in moving the 100 plus pound amp into place.