No, mainly becuase of the design and manufacturing. The power supply
section
in a Zapco amp alone costs more than all the parts in some crap amp.

And that translates to what?

Far superior amplification. Better sound quality, better reliability.

What aspects of the sound quality are improved? And how?

It seems that you feel that a $49 1000w amp will perform exactly like a
$1500 1000 amp...why? Please explain.

Well, if they both truly delivered 1000w, the difference may be reliability
or features (I've never heard of a 1000w amp for $49...I'll take 10 ).

What kind of amps do you have? I'll
bet you don't run Dual/Jensen/Pyramid amps do you?

I run a/d/s/ and ESX right now because I know of no other 8 channel amps
with crossovers as extensive as these and a reliatively inexpensive price
tag.