That is a deal killer.

How does that help?

It won't need any drivers to run on Windows. Though without ASIO how would the performance be?

Wouldn't you be able to use ASIO4ALL as a solution making this a non-issue?

Fwiw, who exactly says that there's no ASIO drivers for Windows?

- Sascha

Excellent point. If you look at the picture of the bottom of the unit, there is a switch that toggles between iOS and Computer modes. It would stand to reason that iOS mode is class compliant and Computer mode would involve drivers. Plus, they would be silly not to make ASIO drivers available.

No dedicated ASIO drivers:

http://tascam.com/content/downloads/products/724/e_iu2_om_va .pdf

Personally, I'd be buying something like this with iOS use in mind. If it functioned well on my PC, perhaps with ASIO4ALL, then that would be a nice bonus. If not, it wouldn't be a deal breaker.

EDIT: Of course, if it didn't work robustly on an iOS device, that would be deal breaker. After some initial issues with my iM2 (now OK) I'm a little wary of plunging in. I'll be waiting for some reviews

Oh well, that's pretty bad then, at least for all Windows folks. Sure, ASIO4All might work, but I'd rather not bet on it.
In addition, I'd really like to know what the lowest possible latency under either OS would be.

- Sascha

Maybe Tascam is lucky and they can get it work. We will see.
It's too bad standard windows drivers suck, but they do.
Maybe it is the applications that suck with utilizing windows drivers.
Either way Microsoft should buy ASIO4ALL and work it out as a standard driver feature. And ship it with Windows.

I wouldn't mind having a single interface I could use with Windows or iOS. The Tascam looks like the perfect size, price, and features except no ASIO
Bummer

But will it melt? No, I mean, what's the release date for this thing, so much talking made me a bit hungry, but obviously the first guinea pigs will come out with good reviews to remove all assumptions.

Is there a release date yet?

late February here in Japan - though I'll hold off further purchasing consideration until some reviews come in.

Same here but it's looking pretty good to me so far. This is the interface I want so hopefully it turns out to be the real deal.

It's on Amazon now.
Although I order a lot from there, I don't really keep up to date to pre-release gotchas and tidbits... so it says "Temporarily out of stock", you probably guys know what that means for pre-release items more than I do.
$149.99 USD.

ZZSounds lists it as "More expected Feb 16".

Good stuff. On the advent of the first reliable review of this thing, that shows it to live up to expectations, I'm ordering one. Anyone want to buy an IK iRig MIDI? Sorry, IK. But you've really missed a trick here (along with lots of other people knocking out iOS hardware I have to say).