How to physically move large heavy 100lb amplifiers easily (up and downstairs)

A keg is a lot bigger and heavier than an amp, and we were able to carry one cross-country with two people just about any distance over just about any terrain. We took an empty 50 lb onion or potato sack and stuck a dowel (broom stick) through each side. You could make one out of an old pillow case, or a large bath towel or two. Mine we called the beer stretcher. You have permission to call yours the amp ambulator.

Hand truck or end over end in their boxes.Either one is not difficult if you're slow and careful.

A hand truck with pneumatic tires. You also NEED one or two CAMLOCK STRAPS to hold the item to it.

i was pondering tonight... what are friends for?  then i saw your thread  :)

imhififan actually posted a link to a very unique hand-truck.  I actually have not seen one like this.  The problem with most hand-trucks, even if they have large pneumatic tires, is that you still have to have an enormous amount of lift to get the hand-truck up each step.

This hand-truck from northerntool has a 3-wheel rotating assembly.  Watch the video in that page.  It's worth $100.

https://www.northerntool.com/shop/tools/product_200737655_200737655?cm_mmc=Google-LIA&utm_source...

It actually looks like it's back-ordered on Northern Tool.  It's also available on ebay for $99 + $22 shipping.  Just search for "Strongway Stair Climber Hand Truck".

There are other places on the web that sell similar 3-wheel hand-trucks.