Sure that would be appreciated. I guess I would then need to know how the GS1000e and GS1000i compare to extrapolate from there.
Hello!
The GS1000e is an interesting headphone. The 'mids' are rather smooth and noticeably free of grain. Their sound is less dependent on the quality of the recorded material and/or the codec used, certainly when compared to the HD800, but they are not unobservant either. So, the better the recording, the better they will sound. One thing that I think contributes to this 'character' is the transient response. If you listen to something with faster pace, they will keep up but with certain musical genres just barely. This 'feature' means the movement of the diaphragm doesn't correlate to the music signal so the diaphragm sometimes 'lags' and therefore creates something of an interpolation to the intervals in-between the actual notes. I think this is what gives them their 'liquid' character. In contrast, the HD800 benefits greatly from higher quality codecs used. They are very articulated in that sense.
If we're talking about balance, I'd say the GS1000e does sound a bit withdrawn in the mids. When I say 'a bit', that's precisely what I mean – a tiny bit. This is somewhat reinforced by the fact that the upper bass is elevated and in my opinion, too much. I'd say at least 6 dB. That being said, take this with a grain of salt because I have not yet connected the headphone to the main HIFI system. In contrast, the HD800 sounds flatter in the mids, more truthful.
If you were to listen to radio broadcasts like radio dramas or talk shows, you'd notice the speech intelligibility is really excellent. The thing is – it is easy to underestimate the transducer's ability to sound realistic with human voices when all you are listening to is the music you already know well. When you listen to something for the first time, with no lyrics, then you can sometimes struggle to distinguish the words, especially if they are in a different language. With the GS1000e, I was able to discern the words with ease and confidence. Though I wouldn't necessarily use them for speech transcription (they're much too expensive for that), they would certainly serve their purpose and are as good as the HD800 in that regard. To correlate this to a technical specification, I have often found that intelligibility translates to square-wave response at half a kiloHertz. So, the GS1000e is probably good in that region, not that it should take away anything from the headphone if it isn't.
Now onto the conundrum...
People often discuss 'timbre' and if what they're listening to sounds natural or not. Though I didn't choose to pursue a career in music, I was a professional musician for more than ten years and played in all sorts of places, from small venues to open city squares and big concert halls throughout Europe. But all of that is really not necessary to know a natural timbre when you hear one. I would be last to blame anyone but it is strange how people tend to believe what someone has said rather than to trust their own feeling. More or less all of us have been born with the same auditory system and you just 'know' when something is a 'reproduction' of an actual music event instead of a real live event. My concern is that even the reviewers have never been to an opera house or a music theater, if nothing, just to enjoy the music, let alone to try to distinguish a violin from a viola. In a nutshell, the GS1000e has a very realistic timbre and with good recordings, it sounds convincing to me.
I would also like to point out that the harmonic structure on the GS1000e sounds rather lovely. I could not hear any harsh odd-order harmonics and it sounds to me the 5th and the 7th harmonic was under control. For those who would like to know – the 5th and the 7th and to an extent, the 9th, can be rather disturbing as they are rather a consequence of an imperfection in a musical instrument or a playback device. It might also interest you to know that pianos have been constructed to naturally dampen these harmonics for over a century. As you can imagine, they might not have known the science behind it back then, but they too trusted their ears. So, all of us should do no less.
We could talk about the rest of the sound but the question was specifically about the mids so I don't want to ramble. It feels as though I've reambled too much already!
In any case, I hope this helps.
Cheers!