Pro Amps I.e. Crown, Qsc

[kexodusc]

I owned a Crown amp long ago. Reliable and powerful, but not in the same league sonically as the Threshold that followed it. The power supplies are typically much smaller on pro amps. My CDP weighs more than the QSC amp.

rw

Different ball game quite often though...power supply size by itself is no longer a good measure of an amplifier's ability. Even for home audio amplifiers. Unless they are the exact same topology. Even then, there's differences in PSU's too. Chasis, fins, the use of fans, etc. all contribute to weight as well. A/V receivers still go cheap quite often, but even $300 receivers have seen credible, real power increases in recent years, ability handle lower impedances a bit better, while significantly reducing size and weight of PSU's.

There's little doubt in my mind that many of the established amplifier manufacturers keep using old school, heavy, less efficient designs simply because a great portion of the target market uses weight as a quick evaluation measure. They can be cheaper to produce too.