Just back from CanJam. I spent more time with the MrSpeakers Ether than any other headphone today. Let me start by commenting on the construction. These headphones are amazingly light for their size and construction. I could easily see myself doing extended listening sessions with no fatigue at all.
If I were asked to compare them to an existing headphone, the sound to me is more LCD-2 (or LCD3) than HD800 or HE1000. Of course a noisy room is poor listening environment, but that was my initial thought.
The sound is remarkably close to your head. That's the first thing you notice after the physical lightness of the headphone. The music doesn't lose its sense of space, but it sounds like a very close, intimate sound. Where the HE-1000 seems to trail off the music to an infinite distance, the Ether is very present.
Detail and resolution is very good. Comparable to the LCD3 or HD800. Both of those headphones don't have the intimacy of the Ether. But some people prefer a wider space. It's going to come down to preference.
The bass is precise, not blooming or bloated in any way. They're not thumpers, but the bass is full and satisfying. I would not categorize the Ether as bass light.
Compared to the HE1000, well as you might expect, the HE1000 is simply in another class in both price and sound. The HE1000 is closer to the Stax 009 than anything else. Where the Ether is close in, the HE1000 comes from all distances-- it's the closest thing to plugging you head into the mixing board I've ever heard. It's a world-class headphone that is going to be debated as the best in the world for the next few years. It's also twice the price. Remember that.
The two pairings I heard were with the Schiit Ragnarok and the Woo WA-5. I much preferred the pairing with the Woo. A warmer more open sound was more inviting to my ears, given the close-sound effect of the headphone. For the record, the Woo was using the K1000 output.
The Ether was my 2nd favorite headphone of the show. The HE1000 was my favorite, for anyone keeping score. I will be purchasing the HE1000 and selling my HD800 when they're available. The Ether is a great headphone, no question. I'm just seeking that next level, and the Ether is a more lateral move than a move up.