Hows the bass extension and impact on the 109s compared to the Aryas? I had some Arya Stealths for a while until I went for the Meze Elites. The Elites lack in one single department for me and its sub-bass slam/impact. The Aryas felt like it was punching you in the chest for some bassy songs, where as the Elites don't have as much if that thump. Unfortunately I'm going to have to part with the Elites for now because my PC decided to suddenly die, so its time to build a new one. I'm debating between replacing the Elites with 109 Pros or a used set of Arya V2s thats local to me (whatever cash is left over will build my new PC).

The only true endgame headphone.

honey, I added a +200dB Bass shelf

They are totally useless now, just give them to me and I'll dispose of them for you.

Just aside if it was me, I'd get a pair of new earpads from Sony (assuming you can) and I'd just live with it until you want to sell them and fit the new earpads then.

I found that AutoEQ made a huge difference for me with my K702s. I find myself using them more than my HD6XX now. And I only found it when Crinacle just did a quick demo of it in passing in one if his videos. It makes a mild improvement to my HD6XX, but the difference with the K702s was massive. I know a lot of people don't like the idea of EQing (I was one if them) but it's free and it can be an improvement.

Edit: Also, if you want to try keep it as close to stock sounding just for the sake of it, make a copy of that EQ profile and just start moving the siders back towards 0. If you don't like it, just put it back to the value it was. I find even all the K702 really needs is a reduction in the 2000hz range. That gets rid of most of the harshness.

Were you able to get as far as exporting the AutoEQ settings? They will just be downloaded as a .txt file. If you have, you just need to load up the full interface in Peace (the option on the right when you open Peace) and then find the import button and just select that .txt file from your computer. Then just make sure to save it so it adds it to your list of EQs. The import button is sort of small and easy to miss. Easiest way to describe it is if you find the Green + and Red - buttons, look just below them. They are on the right side of the program.

My K702s sound very harsh to me without EQ. I've got a Schiit Magni and Modi and I'm used to my HD 6XX. If you want to try something, get some EQ software and go onto Crinacles headphone grapher, select just a K702 and his standard target (default) and use the Auto EQ function. It absolutely transformed my K702s. What really helped was it drops something like 4-5db in the 2200hz range and takes out all the nasal harness sound.

Here is a link. Just go into the Equaliser tab and just click AutoEQ (you can change the AutoEQ range from 20-15000 to 20-20000 if you want to alter the super high top end. This will take LOADS airy treble out. I didn't do this.). Just export that and import it into your EQ software (such as Peace). I found I had to increase the volume on my amp, or else adjust the preamp gain in peace to bring it to the same volume level as default.

They are no match for the almighty PKCell.

I remember seeing a review about the Hifiman Arya on Amazon that was complaining that it leaks out too much sound and leaves in too much noise. Well no shit, it's open back. A bad review just because the buyer didn't bother to do a single bit of research.