wallijonn...
...I have no Meta!
Just a Corda HA-2 and an Earmax Pro. These two usually drive my headphones, currently mainly the DT 880. Besides I have a passive «amp» (a 500 ohm potentiometer) to attenuate the source signal which actually drives the headphones itself. I'm not sure if you mean this one with «passive preamp» – the latter is meant to control just the speaker amp and consists primarily of a 10 kOhm Alps potentiometer (thus nothing special – but still clearly better than any active preamp). Currently I spend very little time with my speakers – my headphones represent my main rig. This as a consequence of my tinnitus which I now have since 1¾ years; it was much easier to ignore it with headphones. Now that I'm used to these I find it hard to return to speakers – so much hollowness and standing waves, such a blurred bass reproduction...
Well, you wanted to know more about my interconnects. From my profile: self-built digital, interconnect, speaker and HD 600 cables (all of 0.028-0.05 mm magnet wires). This list isn't quite complete anymore. I've changed the magnet wire digital cable for the Bel Canto DAC2 to one made of 0.2 mm resistance wires. These sound more neutral and less glossy – that's better with the Bel Canto, while the (rather dry sounding) Theta preferred the magnet wire design.
With my (foamless!) HD 600 I slightly preferred the EMP, especially with classical. Now, with the DT 880, the HA-2 is my favorite. It's somewhat darker, rounder and more elegant in the treble, also a bit more controlled and dynamic. But I still slightly prefer the EMP for SACDs. Today I changed its output tubes from the brilliant russian military tubes to the rounder Siemens E88CC – with success.
Compared to my passive «amp» both real amps seem to sound more complete, richer and smoother. But don't imagine a sound as if there was any technical shortcoming (there isn't one anyway) like the notoriously suspected insufficient current supply: there's full, dynamic bass, clean and transparent mids as well as ultraclear and -detailed highs. I could easily live with it, if I hadn't the more euphonic headamps at my disposal. I can also live with this «lie», since it simply sounds more enjoyable and even true, although it actually isn't (see my previous postings to the subject). With the DVD 963's line out it's hard to get a sufficient volume anyway, since its output impedance obviously is too high for direct-path purposes.
As to the DT 880: yes, I love it. It has replaced my HD 600 as my number one headphone. After the painful process of desillusion which took me down from my initial euphoria – you know: the brightness shock! – now I can take it as it is: an imperfect sound transducer (like all the others), nevertheless a highly fascinating one, and after the source swapping even one of the best and maybe even the most musical headphones I ever heard (whatever that's worth). I wouldn't go so far as
gerG with his B&W vs. color allegory – that's just too unfair to the HD 600 IMO which is still a great headphone –, but I can understand him to a certain degree.
Howie...
...yes, for me too the HD 600 is still a benchmark when it comes to neutrality – knowing that in fact it isn't really neutral. I wouldn't even call it clearly more neutral than the DT 880 after all. But the colorations the HD 600 shows are less obvious (and maybe less annoying!) – because they mainly consist of a dip instead of a peak. So I wouldn't call the DT 880's enhanced 10 kHz range a greater coloration than the HD 600's 8 kHz dip. It might just spontaneously be more ear-catching. But the downside is the HD 600's slight lack of fascination and vividity, of which the DT 880 has just a tiny bit too much. It's a matter of preference, not objective truth.
JaZZ