Originally Posted by tom hankins
I can only speak on my systems and what has happened as they have been upgraded. The HD600/650 have progressed more and been able to get better every time at a level the DT880, RS1, and the CD3000 have not been able to. As the amps and sources got better ther other phones have been sold off. This is the reason I now only own the HD650. These have just been my findings.
But, here's the centre of my argument, I'd put it to you that you're not comparing apples with apples. Custom cables? Amps voiced for the respective phones (bearing in mind that practically every amp designer voices / builds their amps for the HD580/600 'because it's what everyone else uses')? The other phones are tonally somewhat-to-very different from the HD600/650. The RS-1 is perhaps the least capable of the lot in technical terms, but if an amp is built around it I'd say it has every chance of standing side by side with the HD650. Ditto the CD3000, W2002 and DT880.
With the modded WAD, I ended up with the nearest thing to a "Sybil" amp. I could hear the above with the HD600/Cardas, CD3K, DT880, W2002 and RS-1.
Anyway, back to the Q010...