Amplifiers weight


What does amplifiers weight has to do with performance?
im trying to decide between this 3 amps
parasound JC5 73 pounds, Anthem STR 60 pounds Michi S5 by Rotel 132 pounds 
I can get them around the same price 
my speakers is modified klipsch KLF 30
preamp is Michi P5 and a pair of SVS SB16 ultra Sony Hap Z1 and Cambridge Azur 851N
i really like the looks of STR amp 
lordrootman
I have 2” granite sides and bass plate on my amp. My amp weighs 245 lbs. It’s the best amp ever made, bar NONE! The weight of an amp determines its quality. One of the major criteria all should use!

wolfie62
I have 2” granite sides and bass plate on my amp. My amp weighs 245 lbs. It’s the best amp ever made, bar NONE! The weight of an amp determines its quality. One of the major criteria all should use!

>>>>>That statement is patently false and I can prove it. Isolate any amp, even a very heavy one and it will sound better AND weigh less. It’s pure physics. Case closed. Although there is some advantage to dead mass inertia the whole house is shaking due to seismic type energy and everything in the house is shaking with it. You can’t fool Mother Nature. 
My class D was $90/lb and I can carry it with one arm. Previously I had an 88 lb Pass behemoth which I could boil water on for pasta which I do not miss.

Weight obviously exudes feelings of quality. I remember back in the 90’s I opened up my Pioneer elite CD player to find a metal plate affixed in the middle of the chassis with no other purpose I could think of other than to provide weight, either for vibration control or just to add weight.
@adurerca ....2 plates in my PD-65 if I remember correctly, intended to isolate the power supplies from the digital stuff.  I believe the chassis was copper.   The player read the CDs turntable style (upside down) and visitors would always put them in top-side up and ask, "why doesn't this play?"