I know this thread has been going a while, but I'll just add my appreciation for the DX1000s.
I finally arrived with them after a long journey through the cans which are hopefully showing up in my signature. My amp is currently a Phonitor, which is considered very neutral and analytical. When combined with cans which share the same characteristics (e.g. HD800), music just sounded sterile and uninvolving to my ears.
I figured that combining wooden backed closed 'phones with the Phonitor may work, the amp hopefully moderating the coloration which many closed cans appear to have. When the DX1000s arrived, I was immediately impressed. They had a fullness and richness to the sound which had been lacking in the other 'phones I'd tried. Toe-tapping 'phones, basically. Plus the soundstage is impressive.
The only issue I found with them, as has been reported elsewhere, is the slightly coloured mid range. Something wasn't quite right on particular tracks with guitar-led music (e.g. Arctic Monkeys R U Mine, one of my reference tracks).
I'd read somewhere that a DX1000 owner had dealt with this successfully by replacing the stock cable with a higher quality copper one, in that case the Aphrodite Zeus cable (OCC Copper 4 x 22 awg). I'm in the UK, and wanted an EU-based re-cabler. I knew that Forza Audioworks in Poland offered a Copper HPC Mark 2 extra bass cable (20 awg), so I sent the 'phones to Matthew at Forza for re-cabling.
They've been back for a few weeks now, and I'm very pleased (equally pleased with Forza's service, which I've posted about in the appropriate thread). The new cable entirely removes the mid range colouration which was an issue before. The tracks (like the Arctic Monkeys one) which caused me to wince slightly before the upgrade now sound superb, and after a long headphone journey I've reached the point where the DX1000s are definitely keepers for the long term. I am very, very pleased with them, and I find that they match very well with my Phonitor.
Just my thoughts.