If you want lame advice DON'T do this!

Here is a negative review of the K340 by a well known and competent reviewer Tyll Hertzens :

https://www.stereophile.com/content/two-vintage-akg-headphones-k240-sextett-and-k340-electrostatic-dynamic

Is he right?

No, not at all...

But what he experienced at first listening , i experienced it too...😊

The difference is that he listened to the K340 a few hours and pass to an another headphone more easy to figure out ...

Me i decided to optimize them...😁

There is no mismatch of the drivers as he claims and no comparison between my K340 before optimization and AFTER...

I wrote that because you must know what you will go for before buying ...

By the way i bought by curiosity the K240 too...

So good they are and they are, they dont touch the K340 by far...

I bought them because i wanted to check the passive resonators workings in these two...

Dr. Gorike who designed them was not a mere headphone designer, but a physicist and a genius in acoustic , and one of the founder of AKG ... The K340 was the greatest of all their flagship some compared it to the Onega Stax...But it is even better because of their natural deep  bass and a better 3-D holographic image...

A i will never upgrade it...The acoustic soundfield of this headphone cannot be replicated by one singular membrane headphone  with no acoustic resonators and an empty singular acoustic chamber...

It’s all good fun but in terms of results, the problem occurs when people have big goals but no interest in learning how to get there effectively as needed.

But again its just a hobby not something both critical to society as a whole and complex, like understanding global warming, so as long as people enjoy their ride its all good and we all will be OK in the end........or will we??

Death does not exist and music is better in Heaven where Bach direct most non improvised works...

It is Chet Baker who direct the improvising singing section with Monteverdi... They work well together i dont even know why... 😊

I feel this will be a good match for my headphone amp, Sony TAZH1-ES Signature, using my Onkyo DP-X1 DAP as a source.

If we stopped giving each other well intentioned but useless advice on their systems here the forum would wither away and die. 🤣