Originally Posted by Iwamotto Tetsuz
So your saying, even having 0.000XX % lesser distortion will improve sound?
Well, no. I'm saying that the less distortion there is the better the amp will sound,
You originally asked why two amps, with the exact same distortion specs, will sound different. I tried to explain that the testing dome to determine those specs (distortion) isn't sophisticated enough to "see" the details of the waveform that effect the "sound" of am amplifier.
Look at it this way:
Standard red book CDs are 16 bits with a. 44.1 MHz sample rate. (That's pretty much the agreed to sampling rate and bit depth where most people can't hear a difference.) That's one 16 bit number every 44,100 thousandths of a second. While amplifiers don't actually "play" at a "sampling rate" they do have to (or should be able to) resolve that sampling rate when it's converted to analogue. There are very few testing labs (that I've seen) that can look at a lengths of music that's 1 44100 thousandths of a second long, much less compare them., and even those that can can only look at and compare pure tones, not the extremely complex wave forms present in actual "music". Then there's the ability to separate out the different kinds of distortion, for example harmonic and inter-modulation. So, generating some kind of "number" that describes why amps sound different is pretty much impossible. We just can't "see" the differences that we can hear since, after all, aren't out ears and brains much more sophisticated that any testing equipment?
We're talking very subtle differences here though. Like the sound a drum makes when it vibrates the air and in addition being able to hear the sound of the drum stick contacting the skin
. Or, when listening to a symphony or female vocalist, does the "sound stage" remain rock solid and immovable at all frequencies
. While we can hear those things (it the amp can actually reproduce them) it's very very hard to analyze why one amp does it better than another.
Another consideration is that amplifier manufacturers (and manufacturers of pretty much any other audio or video product) really don't want us to know these things. If "distortion" could be measured accurately enough to point out the differences in amplifier "sound" then whom ever made that amp with the best "curves" would capture the entire market, but the manufacturers know that they can never make am amp where input exactly
matches output and their amps will always have a "sound" so they market based on that sound - and publish specs that are misleading or useless at best. ti's the only way that they can do it - if there was a "number" that could show it they'd surely be using it!
I hope that helps............Edited by billbartuska - 2/18/16 at 4:23am