I would like to write now a second part of my description of these two cans (Qualia 010 & Beyerdynamic DT 880).
The Qualia, I still think so, is the most advanced cans ever made, but I’m convinced that they are built especially for the new formats as SACD or DVD audio, probably with the reed book CD they are too much advanced and all the details they show, produce sometimes an effect of disturb to the listener, even with hi class sources. May be would be different with turntables, but I don’t have listened the Qualia with an analogical system.
After nine mounts of Qualia listening, I find the DT 880 still detailed and with a richer (lush) sound especially in the med, for example female voices generally are better with the DT 880. IMO is very, very important the “walk” you are coming from for a right impression of a can. Coming from the most detailed can (and here all are agree the Qualia are) and to find the DT 880 still “detailed” is something credible and important. In this regard I did not found the HD 650 “detailed” as the DT 880 when I heard them after the Qualia. (The RP010 is equal for the two can: DT 880 and HD 650, I think because the two cans have similar specs.).
But he most important advantage I find in he DT 880 respect to the Qualia is a BIGGER dimension of each instruments or voice, yes, I’m sure of this. If I hear a piano in the Qualia is very precise, detailed, real… but even not BIG as in the DT 880. May be the RP010 works better with a hi impedence and low sensitivity cans… I don’t know. This BIG dimension of instruments is what I like a lot for the near speaker-like sound. I think that is the most important aspect, more then detail or transparence. Generally headphones are more detailed than speakers, but with littler sound. Soundstage is also very important for a speaker-like sound.
(Rudi is working for a balanced RP010 + Balanced DT 880).
Best!
Nicola