With all the discussion of blind testing and subjective opinions of solid state power amps I'd like to know why manufacturers of more expensive amps can justify their costs or are perceived to be of better audible quality.
E.g. why would ,say, a 150 w/ch 2 channel NAD cost three times as much as an Audiosource 150 w/ch 2 channel amplifier - other than possible features - what components in the NAD would out perform the less expensive amp if powering non demanding (say) 8 ohm speakers? They weigh about the same if that's of any consequence.
Without having any electrical knowledge (and being horrible with math) the science involved is all Greek to me. I've swapped out several power amps (with disproportionate prices) within the same system and can't really differentiate audible differences between them (at different times and non level matched - just listening to sources and volumes I'm intimately familiar with.)
E.g. why would ,say, a 150 w/ch 2 channel NAD cost three times as much as an Audiosource 150 w/ch 2 channel amplifier - other than possible features - what components in the NAD would out perform the less expensive amp if powering non demanding (say) 8 ohm speakers? They weigh about the same if that's of any consequence.
Without having any electrical knowledge (and being horrible with math) the science involved is all Greek to me. I've swapped out several power amps (with disproportionate prices) within the same system and can't really differentiate audible differences between them (at different times and non level matched - just listening to sources and volumes I'm intimately familiar with.)