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

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.

+2 on northerntool, but if not then a regular one much less chance of hurting your back than these other ideas , particularly the " amp ambulator ".

In five weeks I'll be moving our stuff from storage to a new house.  My audio room is the "bonus room" above the garage, about 15 steps up from the main level.  My amp weighs 110# out of the box, speakers are 122# and subwoofers are 133# each.  I've hired movers and walked thru the move with the owner, so he'd understand what's involved.

After the boxes are hoofed up the steps, getting my son & son-in-law to help me unbox the components and get them up on the stand.

I guess the next step is an appointment with an orthopedic surgeon?

I agree with those that suggest a hand cart that's made to climb stairs. As suggested one or two additional straps are necessary to keep the item being transported in place. My hand cart has an additional extension that folds down increases the size of the platform from 18" wide x 6" long to 22" long. I've used this to move heavy amps and very large, heavy speakers up and down long flights of steps. No problem. It's surprising how you will use it for moving many other items at home etc.