I picked up the 535 again for the first time in probably a month. Between the spacious soundstage of the E5c and the bass (with added isolation) of the 846, the 535 has been idle. I remember putting the 535 away for a week to give the Ultrasone IQ a fair listen. I thought the IQ had a classy, elegant, and well behaved sound, then I put the 535 back on and man (what can I say). The 535 sounded like a live concert in comparison. Well, here we go again....
The 535 is not going back in the starting lineup. The 846 is too smooth, but I'm not going to forget I have the 535. It's still really good (IMO) . If I'd found Viper4Android (V4A) before I bought the 846, I would still be using the 535 every day and probably wouldn't have purchased the 846. V4A solved the sub-bass issue. The 535 goes deeper than I previously thought. Again, the 535 is not the 846, but it would have been good enough at the time (with the right audio software backing up Poweramp).
I really want to hear the 846 ... but I just can't accept a 1000 dollar upgrade over the SE535 (mostly because of my personal financial situation; had I more money, I'd buy it in a heart beat).
That said ... I agree with you ... the naturally flat, very neutral, somewhat mid centric default voicing of the SE535 is incredible.
Further ... with some EQ? It gets *really* fun. I use mine with a Cowon J3 and with various EQ settings, the bass can become monster like, and super deep and clean with the SE535 ... no matter the volume. Which is another thing I love about them ... they scale to the loudest points without ever distorting. I think your ears would blow before they distorted ..
I've mentioned it before in a review I did of the 535's that they EQ very very well and the bass can be anything, anyway you want it. But I still find myself, very often, enjoying the default sound sig.
Still want to hear the 846 ...