Are all asynchronous USB inputs similar?

Here is a better way to decide: customer posts on various forums:

http://www.empiricalaudio.com/news-and-reviews/off-ramp-converter

Steve N.
Empirical Audio

A better way to decide than to listen for yourself? Now, I have 'heard' everything!

Steve,
For someone to compare very well regarded USB products such as yours and the Baetis server,surely listening to both is the best way to make a choice.
Charles,

Certainly listening is the best way. I offer 30-day money-back, less shipping, so the risk is minimal.

I was just commenting that one vendors review is not as good as many customer unbiased posts.

Steve N.
Empirical Audio

They both have trial periods. But given the complexity and the pretty different approaches not sure comparisons are that easy. One is a computer and one uses a computer you have.