1. In spite of the latest firmware (1.0.7.) Like to acknowledge the device during prolonged use in the middle of the recording and then his service. About the headphones you will be informed by a deafening noise of this fact, in the app (GarageBand multitrack DAW) Nothing happens, you have to separate the IO Dock several times and reconnect, if necessary, perform a reset.
2. Sometimes the Ipad reports for contact: "USB device is not supported". I have experienced this with various Ipads 2, each with latest OS. This error occurred on so insistent that I could no longer take several days. Suddenly it was working again. Enigmatic.
3. The audio characteristics are modest: The headphone monitor distorted like at higher volumes, the sound appears even at low levels strange "swollen".
4. The adapter has an overall cheap impression. Multiple "in and out" can scratch the Ipad at the edges.
Conclusion: If you like surprises, one more hour session may perhaps abgewinnen something with this device. Otherwise, the stress factor is very high. Sound and workmanship rather to the layman who wants to concentrate now and then short the matter. Serious use is, however, quickly spoiled. In short: a dubious product (well, what the information disclosure regarding technical details by Alesis concerns), which I would have preferred to spare.