How do you follow up the HE-400. With it's wealth of firsts...first planer to be easily driven by a normal portable device. First to do so and also be the least expensive planer on the market. Most transparent can under $7-800.00 Well, you make it easier still to drive, you improve every parameter of the sound. You make it infinitely more comfortable. It's a little too soon for specs and reviews, but they'll be out soon and rather stellar. Till then, pre-orders abound.