Yes.
I'm very much aware just how good irDAC by ARCAM is for the cash. I know I did very well choosing a high quality DAC for under 1000$.
It's lovely with my HD 800's and I of course would really like to pair it with those He 1000's to get a different sonic signature. It's nice with the sony MDR Z7's which I own as well, but I really wonder just how much different the HE 1000's are from that of the HD 800's. Double the price!
I've listened to the HD 800's twice. First time, not impressed at all. Second time, they sounded much better to me, and I finally understood why so many people love them. Based on limited listening, and also based on reading some of the posts, I would say this:
1) The biggest difference is in the
bass, especially the low bass. Here, IMO, the HE-1000 are far superior to the HD-800. With some notable exceptions, most (but not all) listeners agree about the low bass. The mid-bass in general and the mid-bass punch in particular is more controversial.
2) The
treble of the two headphones seems to be perceived differently by different sets of people. I'm generalizing and I'm sure there are exceptions (and maybe I'm dead wrong about this), but my overall impression is that there are two main groups, neither group being "right" or "wrong":
a)
Group # 1 perceives the HD-800 as significantly more detailed and resolving, and less forgiving, than the HE-1000. They find the HE-1000 to be more laid back and many of them think the HE-1000's are TOO laid back. Some think there's a lack of transient attack or leading edge attack. This group tends to listen primarily to classical and jazz music.
b)
Group # 2 perceives the HD-800 as strident and analytical to the point of sounding artificial or even "etched". By contrast, this group finds the HE-1000 to be much more natural sounding and "musical." This group varies with respect to whether the HE-1000's have more or slightly less detail than the HD-800, but they think the treble is better overall in the HE-1000.
3) I think that most people would say that the HE-1000 has an outstanding
soundstage. Comparisons to the HD-800 on soundstage seem to be all over the map. My personal opinion, formed only after the SECOND listen to the HD-800, is that the HD-800 has an even better soundstage than the HE-1000.
To my ears, this is the only area where the HD-800 is "better" than the HE-1000.
4)
Midrange: I can't answer which is better because it would require more time listening to the HD-800 to get a sense of its midrange. People have varied widely on how they describe the midrange of the HE-1000. Some say it's recessed (mostly Group #1), others say it's "natural" and beautiful (Group #2).
Here's an important point: The HE-1000's sound good to great on most amplifiers, provided a certain threshold of power and current (and maybe voltage) is met. In my case, they became consistently magical with the MicroZOTL 2 amplifier. Others have reported significant improvements for the HE-1000's using "better" amplifiers. The HD-800's are almost certainly even more amplifier dependent.
BOTTOM LINE: You'd need to listen for yourself, then decide.
By the way, I also use an Arcam irDAC.