Headphones vs speakers….

What you describe can be APPROXIMATED very well with SOME headphone... No headphone can beat a TOP speakers/acoustic dedicated room by itself alone ...once this is said and is clearly written...

I know that in his own way some headphone can give a soundfield which is speaker like... Thats my point...

But it cannot beat all good speakers/ in a dedicated acoustic room in MY OWN EXPERIENCE on all acoustic factors ...

But this approximation with the K340 is so good , especially compared to low cost speakers (so good they could be as my Mission Cyrus 781 was), that i can live with it and listen music... ( my Mission speakers specs were not enough to beat my headphone anyway even in their dedicated room )

And there is an easy solution to rival any speakers/room with the K340 , it is to buy the Dr, Choueri BACCH filters...

They cost too much for me now and anyway i am happy as it is..But it would be my only upgrade...

In some good recording my K340 give a soundstage filling my room not my head...

Is it comparable to the same level as a top speakers in a dedicated acoustic room as i could have done with one pair ? No not at the same level... With the Dr. Choueri BACCH filters yes at the same level if i use my K340...

With the two operas Akhnaten of Philip GlaSS and the Liszt Christus by Antal Dorati for example i listen to an experience where i can pinpoint very precisely where are the instruments the chorus AROUND ME in the room and not in my head...

most speakers in a living room dont do that...

Very good speakers in their dedicated acoustically controlled room will do better in a more precise way for sure... But i can live with my K340 as it is ... 😊

Here we will have a communication problem : i spoke about my MODIFIED K340 not about any other headphone... i never listened to many top headphone of today...I dont know...Is the RAAL able to do this ? i dont know...

Something seems not quite right here. When I refer to a forward soundstage I mean you don’t even need to get out a measuring tape to know that the vocalist is betweend 10 and 12 feet directly in front of you singing 2 feet above your ears. Snare drum hit almost precisely 8 feet behind and 6 feet to the right of the vocalist. That’s now about 20 feet in front and to the right. Air off the stage and reverb from the room way up to the left and in the corner approx 30 feet away.

Are you telling me that you can specifically pinpoint extremely low level noise reflecting off everything in the room and you can be certain that sound is "mapping" the room so realistically that you know the upper left corner of the sound venue is 10 feet up and 30 feet to the right of your listening position?

To be clear:

All headphones i experienced display a more FIXED soundstage small or huge, of their own determined by their drivers characteristic ...The K340 display a more variable soundstage which reproduce more the recording specific acoustic trade-off...In some case with a completely out of the head impression so vivid i can SEE the instruments in my room or out of the limit of my room ... A speakers/dedicated acoustic room do the same on a more precise level if the room is well tuned for Specific speakers  and for my ears location  to begin with ...

I am now using BACCH in both my speaker and headphone rigs.  During the installation process with headphones, one of the exercises switches between headphones and speakers.  People frequently report that they sound exactly the same, and they cannot reliably report whether they are listening to headphones or speakers.  That was certainly my experience.  I am a BACCH true-believer, and understand why Dr. Edgar has won so many audiophile awards, including the most recent from The Absolute Sound.

Thanks for your post...

Dr.Choueri is an acoustic genius and a physicist, after him there is no more difference because of crosstalk between speakers and headphone...

People dont understand it or dont know about it... In a way all other dac upgrading is obsolete or without it a lost of money...

This is my opinion after reading his papers and interviews...

Despite having, and enjoying my pretty high end headphone and amp system (Grado GS3000, Astell and Kern amp, about $3500 combined), they will never, to me, sound as good as my full system.

They lack the visceral impact of my full system, which is a big part of what connects me, emotionally, to the music. In essence, the difference is loading my 1,600 cubic foot room with sound pressure, compared to the .122047 cubic inches of my ear canal.

Also, when I see live music, the musicians are in front of me, and their individual positions within the acoustic space they are inhabiting, is defined in front of me. Not coming from within my head.