Guys, I made a discovery... we'll I don't know if everyone already knew this but me (not uncommon) but anyway, here it goes....
As you know, if you have a single core iOS device, like the iPhone 4 (not S) you can't run JamUp XT and MTD via AudioBus. So I was bummed out when ADB came out and I couldn't get it to work.
The whole idea of ADB was to route your signal from your input (Apogee Jam in my case), through your emulation app (JamUp XT) and into a recorder (MTD). The reasoning was that JamUp's recorder was not up to par with ATs... but recording to MTD via ADB eliminated this limitation.
Well, turns out you don't need AudioBus at all if you don't want to use it....
Just make sure that JamUp XT is set for background mode. Open JamUp XT, set your signal chain, and put JamUp in the background. Launch MultiTrack DAW, and arm a track, you can select your Jam (or other input interface). Record away!
I just tried that and it works. No longer do I have to record via the iPhone's headphone jack to an external DAW and introducing more noise into the signal.
I'm going to read the MultiTrack DAW manual and see what the various options are.
This is cool!