I mean like dongle-sized, mostly because I’m still upset that the Air and Pro don’t have headphone jacks. Trading the headphone jack for a dongle is a win if there’s stereo input, and a horrible loss in any other circumstance. Anything that’s an actual pro(sumer) sound card is way more expensive and way larger than a hack to bring back the headphone jack.
For iOS?? Obviously a different price category completely, but this would be a phenomenal development
Basically, I want to find something like the Griffin iMic. It’s relatively easy to find things like this, but every single one that I’ve found which clarifies the audio inputs is mono in, stereo out.