I hate headphones. I bought 10 pairs and modified them with success. I disliked them even after successful modifications...
I stumble on the AKG K340 and after 6 intensive months i succeed after optimization (6 modifications) to reach a S.Q. level on par with speakers system on all counts... If the recordings was top i had the experience of a complete out of the head soundfield with deep bass i felt with my toes (bone resonance)
My first dedicated room beat the K340...No headphone can beat an acoustically controlled dedicated room...
But my second room acoustically designed for nearfield listening dont rival my K340 at all ( my speakers are 4 inches woofer they are modified and strikingly good but limited in bass output)...
i dislike all headphone save the founder of AKG Dr. in physics Rudolf Gorike marvel ( i read his patent) the only hybrid headphones ever made with a dual acoustic chamber (5 passive tuned Helmhotz resonators).
I read other top of the line review about headphones. i will not mention them, with for example no deep bass ... Why paying a fortune for that?
Others gave a sound closed in the head... like my 9 others headphone...
Thanks Dr. Gorike...
I asked the Russian headphone Kennerton representative about hybrid design as the K340 ? They say that they tried but it cost too much money and time in research for the profit results...They quitted...
There is no other hybrid. The Dharma was dynamic cell with electroacoustic super tweeter...The K340 has a crossover and the two cells dynamic and electroacoustic do each one half of the audible frequencies range.In the mid frequencies the electroacoustic cell work beginning if i remember around 6,000 hertz not 12,000 hertz as the Dharma... Correct me if i am wrong...i forget the exact numbers.
This is why i will die with my K340...