So I happened to be at the Apple Store yesterday, picking up more computers for work, and I happened to notice a whole stack (about 6 or so) Apogee Jam devices. This was interesting to me, because everywhere I've looked online are backordered.
So, I bought it, to use with GarageBand on the iPad, Multitrack DAW, and (hopefully) eventually Amplitube.
Right now, it does NOT work with Amplitube, because IK Multimedia hasn't yet made the app function with dock connecting devices like the JAM, the Alesis IO Dock, nor the new Griffin thing (which the Apple Store also had, btw).
It does, however, work great with GarageBand and Peavey AmpKit. It's easy to use, there's really nothing to it. Just one input, you plug the guitar in, turn up the gain until it barely hits orange on the LED when you hit it really hard, and you're good to go.
I've also had the iRig, and compared to that, well, there is no comparison. The JAM sounds significantly cleaner, more hi-fi, next to no noise. It truly makes the iPad a functional, high quality Portastudio. There is no output from the JAM; you use either the iPad's built-in speakers, headphones, or whatever else you connect to the headphone jack. I've actually got a 1/8" to RCA that goes to my monitors, if I so desire.
I can finally use the higher gain models in GB without a shit-ton of noise and crosstalk, which is cool. I can also use my Pocket POD too, which, while not being the greatest of modelers, is still find for ideas.
It's pretty amazing to think that for the cost of my Tascam PortaStudio in 1992, I now have an iPad running GarageBand with far more capability, and far better quality.
Another cool thing is that even though it's more expensive than either the iRig or the Ampkit device, it's A. better made, and B. it's made in the USA. The dock connector cable in particular is very sturdy.
Additionally, this works with GarageBand on the Mac, which means you can jack the guitar in, plug in some headphones, and use Guitar Rig, Amplitube, or whatever software modeler you like, without a bulky interface. The device itself is the size of a pack of gum.
And here's the Mini Recording Rig of Doom!