What the heck??
Okay, something's happened, and I don't think I'm crazy yet. I've been breaking-in a pair of K701s along with a Little Dot Mk II for about 2 weeks now, and I have been getting slightly concerned. Over the intervening time I've been hearing that same upper midrange / lower treble 'glare', and that weird suckout between the midbass and the deep bass that the headphone had right out of the box. Now, mind you, the Little Dot improved things over my NAD C352, but some things just weren't right: a lack of cohesiveness in the sound of the 701s, and a fatiguing treble. I spent half of today reading about the Sennheiser HD 600, and concluded that I'd go for it as the 701 seemingly didn't 'agree' with me. Anyway, the K701 and LD were running today as usual; I listened, ho hum, and then I took a break for dinner. When I returned I listened again, and...shock...awe...this ain't the same 'phones!! Everything has come together! Where is the treble glare? Eh? What? Midbass too! This isn't possible, right? Maybe something clicked in my brain? Who knows? Whatever happened just managed to save me the purchase price of a HD 600.