(P.S. sory again for the typos in this thread. This computer really hates me! I ended up typing most of this entirely off screen!)
Yes, but you're still talking about two planars made by the same company using the exact same design. When I look at something to complement another headphone I'm looking for something that provides a very different experience. Is there measurable differences between the 400 and 500? Of course. But I like to own two headphones that give me both sides of the spectrum. The 400 and 500 are not "different" enough for me to call them complementary.
I definitely see what yo mean and I agree about different experiences. I'm surrprised to hear you ay that 400 and 500 are not different enough when the 50 is heralded as the offspring of HD650 with the laid back mids sound. HE400 is sort of the "anti-650" in everything but its dark signature and notable bass presence. You've tried both, I haven't, so I have to go on your descriptions. But from all other descriptions I'e heard, they didn't sound all that similar to me. The simple fact that they're brighter changes the equation a lot.
Keep in mind I also have K702 which is a rradically different presenttation and one I like a lot...yet iI find I'm using them less and less since I got40. Though d2x....you must be a bass head! :)
I'd considered d5x, but I don't know about closed back cans. The only reason I would have an interest in closed backs would be for isolation if noise is preventing me from listening properly to opens. And if isolation is an issue I do already have very nice Sure SE535 IEMs. And Triple Fis. Not quite the same presentation as nice closed backs. But with two nice IEMs and a set of noise cancelling, I have a hard time pulling the triger on any closed back can purely for isolation. Though I'd have an easier time with it were it to suddenly be a noisy day!
That leaves the only other cans I have an interest in as LCD2 (too similar to 400 with the dark signature), T1 (too pricy), and HD800 (way too pricy). And HE6, but that's the same argument as HE500.I
very sensitive to treble and very fatigue prone. My fear with T1, and evn HE6 is that fatigue. IMO, HE-500 would still be fatigue free, give me the natural sound with a slight fun twist I like about HE-400 with a different presentation (laid back.) But from what you say, it's not really that different a presentation?
Edited by IEMCrazy - 4/23/12 at 6:25pm