EQ off. I also tried putting EQ On, +6 across the board, in line with earlier suggestions but still prefer the sound of 1.2.6.
As an aside, before all the debate about the differences between 2.6. and 2.7 had taken place, it's worth noting that I had noticed quite a notable difference going from the one to the other. I walked to work enjoying the hell out of Haim's album, which I got halfway through before getting to the office This was on 1.2.6. I then upgraded the FW whilst at work, then completely forgot about it.
When I walked back from the office, I listened to the second half of the Haim album - and didn't enjoy it anywhere near as much. It was less detailed, muddier and narrower - i.e. exactly what others have noted. I then remembered that I had changed the FW, and subsequently checked the forums to find others reporting the same findings. Big conicidence!
I did wonder if it has something to do with HOW we use the DX50? I primarily listen to it on the go, via HO on my IEMs. No additional amp required. I see a lot of people here amping their DX50s and reporting no change in SQ - just a thought....
I've now gone back and forth a couple of times, but think that I will stick with 1.2.6 for now.
Ditto! This is what I have been saying since I tried 1.2.7.