"Can You Lift Yours?"

The amp's form factor is absolutely a big deal. My VAC 200iQs weigh 100 lbs each and it's just a box with absolutely no handles or grips. The distribution is very front loaded, where the transformers are. For proper front-to-back balance you have to slide your hands under just the RIGHT location a few inches back from the faceplate, or it will try to tip out of your hands and you're about to have a real bad time.

By comparison the Rogue Apollo is the exact same 100 lbs per side, but its chassis has built-in handles, and it's a more balanced distribution, and this effectively makes it "seem" around 30% lighter (or so). Fortunately tube amps don't have sharp heatsinks, but that could be a nightmare on some amps. My Phison A2.120 has very sharp edges but it's only ~ 50 lbs so not an issue. 

My VAC 300iQ monos at least have some chassis structure (rails) that can be used as handles but I haven't tried to move them myself. 100lbs is my "safe limit" for just myself.

I highly recommend IronClad's Command Grip  work gloves for moving heavy audio components.

@mulveling ... 

The amp's form factor is absolutely a big deal. 

Well, yuh....but ones' personal form factor remains the bottom line, esp. when the hands hit the chassis...  Unless your posted pic is a file photo from youth gone by, you've got a built-in 'cheat'. *mock grumble*  And it's vaguely reassuring that the 300s' pose a challenge to you, Commanding Grips notwithstanding.... ;)

Amps and speakers are the bane of most 'philes...those who gravitate to tubed power and large drivers risk damage of varied forms when age is an issue we can't ignore no more.  I'm only half kidding about a lightweight platform on wheels that could extract, lower/move/raise. and deliver the goods to the new space....

As for mahgs' Krells....the 'light industrial' variant would have to be 'beefy' (and no carpeted floors, nooo....). *L*

"Are you available on an 'on-call' basis?" 😏  (He prays i'm kidding....)

My latest and first solid state in 15 years weighs 11 pounds....   It sounds pretty amazing considering it is the size of a shoebox. 

One turntable weighs 122 lbs without the platter, another 105 lbs. I have two SS stereo amps that weigh around 90 lbs each and a 300b amp that’s close to 9 lbs a watt. At this point I’m still able to wrangle them all, but the day will come in the not-too-distant future when this will no longer be true, and I rue that day.

Anything weighing less than 50lbs isn't worth listening to, IMO.