carl
This is working well with my ATH-M50's which I never cared for mixing anyway. It makes them bearable over longer periods of time, more importantly  better overall mix choices.

That's what I use too...and it certainly makes a difference...

mrneil2
"For these problems you need something like the VRM box which simulates the experience of listening through speakers with headphones on. However I wonder if the combination of this plus the VRM box would be a match made in heaven, because the VRM box becomes more useful the flatter your headphones are." (post #10)
Sharke, have you tried this yet?  If so what were your impressions?
Has anybody else tried this with the VRM box?

I had the VRM, and it was somewhat effective....that combined with this indeed might be 
a winning combo...

Remember that Redline Monitor exists as well, and it too simulates the speaker environment in phones.  Much much easier to make panning choices and stuff with this enabled on phones.  Still no replacement for listening through speakers, but I can get very close with Redline though ATH M50s.  They have a free demo as well.
 https://www.112db.com/redline/monitor/
 
From 112db:
 
It replaces the extreme stereo separation that is characteristic for headphones by the detailed stereo image of near-field monitor speakers without any detrimental effect on the audio. Basically it is a so called 'crossfeed plugin' with a few nifty extra's, that add extra spatiality while keeping the sound as clean as possible. It combines filtering, frequency-dependent delaying, mid/side processing, and room simulation to create a convincing acoustic soundstage that allows you to properly localize sound sources. It also adjusts the relative levels of panned sources as they appear on speakers, and moves the soundstage from an indeterminate location inside your head (with headphones) towards a clearly defined location in front of you.
 
 

I just posted this, but it looks to have disappeared.  Weird.  Anyway, don't forget about Redline Monitor.  Simulates speakers in your phones very well.  I have used it for a while, and it is extrememly useful for trying to mix in cans.  It manages to mitigate a lot of the issues phones create.
 
https://www.112db.com/redline/monitor/
 
From 112db:  It replaces the extreme stereo separation that is characteristic for headphones by the detailed stereo image of near-field monitor speakers without any detrimental effect on the audio. Basically it is a so called 'crossfeed plugin' with a few nifty extra's, that add extra spatiality while keeping the sound as clean as possible. It combines filtering, frequency-dependent delaying, mid/side processing, and room simulation to create a convincing acoustic soundstage that allows you to properly localize sound sources. It also adjusts the relative levels of panned sources as they appear on speakers, and moves the soundstage from an indeterminate location inside your head (with headphones) towards a clearly defined location in front of you.
Now you can accurately judge levels, stereo placement, and overall balance on your favorite set of headphones--anywhere, anytime, and without ear fatigue even after prolonged listening. No more night long headphone sessions that turn out lifeless and with too little reverb and separation on speakers. Redline Monitor makes mixes sound identical on speakers and headphones.

I would say the VRM box is going to make a lot more difference than calibrating your headphones, as long as your headphones are good quality. I think the point to remember about the VRM box is not that it's a 100% perfect simulation of the monitors it claims to simulate, but that it offers you multiple speaker simulations. If you can get your mix sounding good on all of them, there's a good chance you've created a translatable mix. 

I searched on the VRM Box and it looks like the music stores say it is 'No Longer Available'. I did find it on Amazon but it appears to be a discontinued product.

sven450, I restored your deleted posts. It was just Aksimet being overly diligent.

sharke
I would say the VRM box is going to make a lot more difference than calibrating your headphones, as long as your headphones are good quality. I think the point to remember about the VRM box is not that it's a 100% perfect simulation of the monitors it claims to simulate, but that it offers you multiple speaker simulations. If you can get your mix sounding good on all of them, there's a good chance you've created a translatable mix. 

This also simulates various type monitors, different phones plus custom configs.
Like I said try the demo, I can easily hear what it's doing compared with my room.

If someone here already has VRM please compare if you can & post.

This begs the question that if you need two run your headphones through a correctional equaliser to flatten them enough to emulate the sound in another environment, whether mastering/reference headphones are fit for purpose?
 
In the immortal words of Manuel from Fawlty Towers, "¿Que".

interpolated
This begs the question that if you need two run your headphones through a correctional equaliser to flatten them enough to emulate the sound in another environment, whether mastering/reference headphones are fit for purpose?
 
In the immortal words of Manuel from Fawlty Towers, "¿Que".

There truly is NO SPEAKER or HEADPHONE that is TRULY flat responding.  Nor is there a 
truly FLAT room environment.  There always has to be compensation, regardless of the
Medium used to "monitor" it....so there really is no question.

Some are closer then others, thus, being "better suited" to the task...but, nevertheless
NOTHING used to monitor a signal is "flat".

OK I get what you're saying so perhaps "flat" should be replaced with "tone neutral" then. So when you hear 440Hz it's more precise than approximate. It's funny though, typically they use 1Khz to show the measure of a headphone response.
 
Not everyone can splash out on Sennheiser HD800, AKG K812 Pro or indeed anything made underground in a Swiss lab. Hey ho....my only decent pair I have at the mo are AKG K702; hopefully I will get something sorted out about the Shure SE425 IEM's.