I'm having some of the same problems with the IU2 and the Zed10FX. I primarily use GarageBand, and I've found that changing various settings (such as the key or tempo) can cause a severe degrading of the audio signal (crackling as well as timing issues with GB's midi instruments.) The IU2 seems more susceptible to these problems than the Zed10FX, but both units are subject to this.Madchiller wrote:I had my friend try Animoog with his Alesis io dock and ipad1, and it did the same thing that my iu2 does. When he put Animoog in the background it began to glitch. Sounds like buffering errors. So it appears there may be an issue with background audio and the 30 pin connector using external devices.
It seems as if at some point an audio driver reset is required to resync everything and clear up the audio stream crackles. I think I wasn't seeing this problem when I used the Z10FX with CCK, because the CCK works itself free periodically, thus resetting the audio. With the IU2, the connection is nice and snug, and you must find a different way of resetting the audio driver.
In GarageBand, for example, toggling Airplay achieves this. In other apps, I've been forced to either disconnect the interface, else kill the process entirely.
All that said, I did some remote location vocal recording a week or so ago that just wouldn't have been possible without the IU2. So its limitations are worth it to me.