"Can You Lift Yours?"

Mac 240 and 275 are deceptively heavy, and there’s no real easy way to pick them up. Bend at the knees, try and wiggle fingers under the transformer half and pray. My 240 has a nice dent in one of the transformer covers.

I'm always amazed when visiting Audio Classics, beefy Mac's sitting on glass countertops. (yikes!!)

They aren’t as heavy as my old threshold (100lbs or so). At least the threshold had handle bars.

I have a Conrad-Johnson Premier 1B and I couldn't lift it to save my life. If it didn't sound so great, I'd trade it in for some monoblocs.

In my 60's, and very seriously handicapped, I have big Macs and giant Krells. I pay my sons' tuitions. I fear only the day they graduate.

Nothing wrong with big and heavy as most audiophiles know it represents good sound. But if you considered more efficient speakers you wouldn't need big and heavy to that degree. Most folks on this website are older and there is a correct way to lift heavier objects without injuring yourself. Look into it before lifting.

Any correlation of sound quality to weight has to be predicated by amplifier topology. Traditional tube amplifiers probably have the strongest correlation here, because the size of its transformers (power plus 2 outputs) generally dictates how much power can be provided at reasonable distortion levels. ~ 1 pound per stereo watt is not uncommon. Of course the raw power itself isn't a perfect correlation to sound quality, but the weight (transformers) is definitely a big factor in distortion and bandwidth. This is how people got an inking the Carver amps weren't on the up-and-up about their power ratings (only 19 lbs for 75 stereo Watts is a red flag).

Next is high-bias class AB and class A solid state amplifiers, which require large amounts of heat sinking and still a very large PSU (power transformer). I'm a tube guy but I'm still quite fond of some of these. 

Then you have class D which can be made extremely light relative to their power output, and the correlation becomes very weak. They can sound good! I don't hate them; they're just not my thing.