I wonder how much of the perceived tipped up treble in modern gear is due to digital sources and the way they sound on most commodity digital players, especially via earphones, compared to analog in the past?
Are good modern earphones tipped up? I am not so sure they are. Most modern digital does not sound like analog or even digital from 20-30 years ago. Either medium is capable of being better these days. I'm not so sure there is anything quantitative that can be cited to support the argument that modern gear is tipped up in the treble. Look at the detailed published specifications and response curves readily available on headphone sites for most modern popular earphones/plugs. Most of the good ones show as flat in response as most anything I have ever seen on paper.
Then there is the assertion that use of negative feedback in amplification devices can produce harmonic artifacts that might be perceived as louder or brighter than otherwise. I do not doubt this is the norm with much mass produced SS gear, and probably even some "high end" stuff, but not all. I would say that I think it was way more predominant as a problem of significance for most back in the early days of SS receivers and amps from Japan, 30-40 years ago or so.
Are good modern earphones tipped up? I am not so sure they are. Most modern digital does not sound like analog or even digital from 20-30 years ago. Either medium is capable of being better these days. I'm not so sure there is anything quantitative that can be cited to support the argument that modern gear is tipped up in the treble. Look at the detailed published specifications and response curves readily available on headphone sites for most modern popular earphones/plugs. Most of the good ones show as flat in response as most anything I have ever seen on paper.
Then there is the assertion that use of negative feedback in amplification devices can produce harmonic artifacts that might be perceived as louder or brighter than otherwise. I do not doubt this is the norm with much mass produced SS gear, and probably even some "high end" stuff, but not all. I would say that I think it was way more predominant as a problem of significance for most back in the early days of SS receivers and amps from Japan, 30-40 years ago or so.