Best way to measure an Amp's power capability


Hello Everyone, 
As we all know not all watts are created equally. A 1,000 watt amp from brand A can be trounced by a 100 watt brand B amp. 

So what is the best way of telling if an amp is high current just by reading the specs or may be by looking at the inside of an amp?

What should one look for?

Thanks in advance! 
danimaz

Showing 1 response by djones51

You could search for independent measurements might give you a better idea if the amp meets your needs. This months stereophile looks at a Yamaha integrated the manufacturer specs are pretty close to JA's measured specs. Unless you have the equipment or know someone that's about the only way I know you can get accurate info is with independent testing.