I never said that harmonic distortion is the only difference that makes things sound different, I said it's the only characteristic difference between tubes and solid state systems.  Any 2 individual amps may have dozens of ways they are different.     I have no idea what the 2nd part of your...

You have absolutely no proof that people can't hear the differences in harmonic distortion.  Going back to your original post, where you claim that .05% differences in THD are inaudible, you're essentially saying that no difference between headphones, amps and anything else in the chain with...

you're right in the sense that harmonic distortion means deviation from the source signal, and harmonics in music is the tonality.  However, the point was it seems that people don't understand what harmonic distortion sounds like.  While they are defined as different things, extra 2nd harmonic...

Can you hear the difference between a grand piano and a baby grand piano? That difference is primarily due to minuscule differences in harmonic distortion. About o.6% Can you hear the difference between tubes and solid state? Under your statement that difference means the difference should be...

For sure changes to the fundamental frequency response (6kHz peak as addressed by EQ and resonators) matter more than changes to the harmonic distortion profile. In general when evaluating headphones the order of importance is something like: 1) average volume level - if you aren't precisely...

I don't think you're deaf at all. The increased distortion actually allows the HD800 to have a THD curve more like speakers in a well treated room. People think of distortion like it's some crackling, boomy, fuzzy sound. 2nd harmonic distortion is merely a slight change to the tonality. You...

Sure, high frequencies create a perception of detail and speed. But you can also get there the good old fashioned way of clean impulse response, good driver matching, low noise and low yet asymptotic decrease of harmonic distortion. Also, the Sennheiser resonator isn't what changed the bass...

The choice wasn't solely to add more bass. There is a belief in audio that most speaker designers have that harmonic distortion should decrease smoothly as you go down the harmonic order. So, there should be more harmonic distortion in the 2nd harmonic than the 3rd, more in the 3rd than 4th...

The m9XX is roughly equivalent to the Asgard as an amp and the old bifrost 4490 as a DAC.  But the m9XX also has more features (adjustable filters and crossfeed).     However, the modi multibit is a little bit better DAC than the m9XX.  It's smoother and has more detail.     Ranking the...

well, let's be clear here as well.  I think in some ways you are mixing up treble emphasis with detail.  When I say detail, I mean ability to resolve due to low distortion and lack of ringing, independent of frequency response.  The DT1350, in those terms, has less detail than the HD650.  The...

yeah, finding specs on power can be frustrating because every manufacturer has different definitions that can be very important.  For some it's the absolute amount of power the amp can send, period.  For others it's the highest amount it can maintain over a specified length of time, for others...

The PS1000e has an extreme 10kHz spike and scooped mids. For some people that equals "detailed." The PS1000e has much more distortion and a jagged impulse response, which are the "technical" aspects of "detail." Some people think it's more detailed because they hear more high frequency than...

These are less detailed than the HD650. What you are describing sound wise is an equalized HD800. If you want it in a closed back, the only thing that maybe comes close is a Sony R10.

the subjectivity of sound preferences might allow some people to prefer some Grados to the HD800. But in terms of technical performance, no, no Grado comes even remotely close.

Unless you listen crazy loud (100dB or so) people around you won't be able to hear. They will not block much noise from the outside though. I use them all the time to walk my dog or at the park.