LoopTree can send to or receive from AudioBus.
It works particularly well when using other apps to add effects either to the incoming signal or to the output. It also works well if you have a MIDI controller, such as a keyboard, hooked up to a synth app that then feeds into LoopTree. In that way, you can have the synth in the background and LoopTree in the foreground.
We're looking into the idea of incorporating AudioBus triggers to control LoopTree from another app.
Let us know how you'd like to be able to use LoopTree with AudioBus and if these would help you!
If you're looking for some ideas to try out, why not hook up Impaktor -> LoopTree -> AudioReverb :)