Day 3 with the Anandas and on my main rig I've been messing with the EQ on the RME ADI-2, being very conscious of only making subtle changes so as not too change the overall character that I really like. I agree with your comment on the area around 6k
and have ended up with the following that I'm happy with:
Peak @ 200Hz, -2.0dB Q3
Peak @ 900Hz, -1.5dB Q3
Peak @ 1600Hz, +3.0dB Q2
Peak @ 3000Hz, -1.5dB Q2
Peak @ 6400Hz, -2.0dB Q5
High Shelf @ 10000Hz, +1.0dB Q0.7
As I said, it's all pretty subtle and doesn't take away from the spaciousness or soundstage. The bass is a little more defined with the 200Hz cut and when it's there......the sub bass is more noticeable. Overall I think the presentation has a bit more body. The cut at 6400Hz isn't much but it takes some of the edge/forwardness off without detracting from the sound signature, I think the big benefit here will be less chance of fatigue over longer sessions. I trialled a deeper cut for some time but thought 2dB was enough.
Having said all that, I can still live with them out of the box and I don't use EQ when I use them at my computer (Qutest + Topping L30).
Finding the right position for the cups has been interesting and I now have them sitting much lower than what I did when I first got them home. While it's not a big deal, I'm not a fan of the rubbery cord and would be open to any suggestions on a decent replacement.
So, my overall impressions so far? I agree with opinions I've seen that the Anandas are somewhat polite and a bit shy when it comes to slam and dynamics but apart from my usual rock/new wave/synthpop/house fare, I don't listen to much classical but I do listen to a decent amount of soundtrack & musical scores and this is where they
really do excel. I was actually torn between the cheaper Sundaras and these when auditioning, particularly as the Sundaras felt like they were tailor-made for my head (sooooo comfortable) and were not as polite, but in the end I went with the Anandas for their spacious sound and the sound of those strings (yum). I'm actually still tempted to get the Sundaras as well one day as I think they complement each other quite well.
For the record I did also audition the Focal Clears, Senn HD800S, Audeze LCD-2 & LCD-X and others but when faced with paying up to twice the price of the Anandas, weight & comfort became a sharper focus of the purchasing methodology.