Actually I meant to say that I don't believe the freq response statement from the Steinberg device, it just doesn't make any sense to support 192 kHz and not output those high frequencies.
About this new card, I don't really know what this means?
MIC IN to LINE OUT 10Hz to 68kHz, +0.5/-3.0dB 10Hz to 40kHz, +0.5/-3.0dB
I just want to know the output behavior, input is less interesting... And why are there 2 values? 40 kHz would be too low, 68 is (just) enough. Although -3 dB is also pretty much, depending on where it starts. etc....
In most cases, you need to test a device to know how suitable it is - it's not always possible to read everything from the specs. For example, Creative cards should be fine if you read the specs - freq response is good - but they change other things in the signal (phase effects among others) making them completely unsuitable.