In few words :
The good news: i dont regret buying them... They are good headphone.... The sound quality is similar completely to the K340....But .....
The bad news: I was suspecting that because after all the two drivers of the K340 CANNOT be replaced by a single driver without consequence and acoustic repercussion on the general S.Q. scale ...
The instrument timbre resemble the K340.... But one that is said.... All the rest is inferior.... Dynamic, transients, bass and highs... The highs are not so refined.... The bass is in the upper part ( a litle boomy if not the right pads) present and it is a good thing, they dont lack bass, but no comparison with the deep bass and bass extension of the K340 which i could fell with my body bones sometimes , neither with his refined highs, but the highs and bass of the sextett MP are there with enough presence to be enjoyed, especially the highs ) ....
Some have said the mids of the K340 are, if not better, on par with the K340.... Sorry, they are not, but so good they are,if we listen in comparison, the K340 being more transparent , his mids are more luminous.... The K340 is more neutral and not mid centric this is the reason why his mids frequencies are better for me .... The sextett are relatively neutral perhaps compared to other headphones but they are not neutral compared to the K340 double drivers ....
I am pleased to have bought them , they are the MP version with cream color and orange border.... They were sold with the original box and for me seems pretty pristine and not used much at all....The sextett is to my taste so good , compared to other headphones , i am happy to own them.... But owning the K340 , i think i will keep the sextett as a spare in case if i loose the K340 and BEFORE buying another K340 pair for sure...Thats all.... I cannot imagine listening the K340 and giving time to the sextett, why doing that ?
Now i think that all those who compared the sextett and the K340 WITHOUT perceiving the differences, own a K340 which had not been optimized in a rightful way or their K340 is fatigued, i dont know....... Because so similar are the imaging, timbre and soundstage and they are, the holography is there too but less clear and transparent, the mids so natural they are on the sextett dont rival the transparent more neutral and more natural mids of the K340.... The K340 is superior on all counts....
The sextett is the K340 for the poor...
I like the sextett, which is a feat in itself, because i dislike most headphones, but it is not surprizing, because these shells resemble one another and the resonators are the same as in the K340....But i would have been more enthusiast for the sextett if i did not own an optimized K340 to begin with .... I am not sure if i will live with the sextett for a long time if my K340 break if it occur one day.... But it is better the sextett than my other left choices, for example compared to the K701, they are more neutral and more natural and way more relaxing to listen.....
The K340 rival probably higher TOTL, the sextett are good but could not rival TOTL headphone.... Lack of deep bass, lack of refined highs even if they are good for sure ...Lack of neutrality, lack of dynamic.....Read me right, the sextett are very good, in a way flawless, but compared to the K340 they are no more flawless....
The two headphones are like two twins, same faces, but one is normal, the other athletic, higher, and better on all physical counts....Same mother, two different fathers....
I was lucky my sextett are like new....No signs of use really....Nothing to replace, even the pads are like new but i prefer my leather one.... By the way differences of S.Q. with pads are not small differences... I did not use equalization really with the sextett, and i dont feel the need to as with the K340 sensitive reaction ....I only add a bit of bass under 100 hertz and a bit of highs ....