j-curve
100+ Head-Fier
- Joined
- Apr 15, 2002
- Posts
- 489
- Likes
- 11
Wow, this thread is blowing up, can I join in?
I think the best phone to highlight amp differences is the one you plan to use with the amp. If that is undecided (or if there are too many to choose from) then a neutral, accurate headphone without colouration.
Sweeping generalization #1: Amps have extremely flat frequency response (ie: are neutral).
SG #2: Amps have very low distortion (ie: are accurate and free from colouration ).
It makes sense that if you want to hear differences between two neutral and accurate amps then you will need a headphone of comparable performance. [Closed phones may not sound wooly but most have significant colouration. My "wooly" HD580 is no longer wooly thanks to low impedance amplifiers and an impeder].
If two amps satisfy SG #1 & #2 and are free from hiss, hum etc., what differences are you looking for? Doesn't it then come down to a choice of what flavour of distortion you prefer, even or odd harmonics, etc.?
Let me stir up the audiophiles by suggesting that it should be possible to determine the good amps by measurement. To the extent that it's not, then we are not setting the test conditions properly, are not measuring the right things, or are not interpreting the results correctly.
In practice SG #1 & #2 are not always true, some amps are noisy and measurement data is not available. So it's back to square one and skip this post the second time through.
You need to do this ->
.
I think the best phone to highlight amp differences is the one you plan to use with the amp. If that is undecided (or if there are too many to choose from) then a neutral, accurate headphone without colouration.
Sweeping generalization #1: Amps have extremely flat frequency response (ie: are neutral).
SG #2: Amps have very low distortion (ie: are accurate and free from colouration ).
It makes sense that if you want to hear differences between two neutral and accurate amps then you will need a headphone of comparable performance. [Closed phones may not sound wooly but most have significant colouration. My "wooly" HD580 is no longer wooly thanks to low impedance amplifiers and an impeder].
If two amps satisfy SG #1 & #2 and are free from hiss, hum etc., what differences are you looking for? Doesn't it then come down to a choice of what flavour of distortion you prefer, even or odd harmonics, etc.?
Let me stir up the audiophiles by suggesting that it should be possible to determine the good amps by measurement. To the extent that it's not, then we are not setting the test conditions properly, are not measuring the right things, or are not interpreting the results correctly.
In practice SG #1 & #2 are not always true, some amps are noisy and measurement data is not available. So it's back to square one and skip this post the second time through.