On Sat, 13 May 2017 14:36:45 +0200, list wrote: >USB Class compliant doesnt always mean [...] Apart from Linux audio I tested an USB class compliant Presonus before I tested and bought the Focusrite. The Presonus worked with Linux, but not with iOS, while the Focusrite worked with Linux and iOS. The first issue with the Presonus is too much power consumption via USB for iOS, but even with an active USB hub the Presonus didn't work with iOS. To cut a long story short, if a vendor claims that the audio interface is class compliant, but actually it isn't, than in civilised nations, it's easy to return the device and to get the money back. Indeed iOS devices ignore specifications regarding power consumption, but Linux doesn't. However, iOS couldn't use the mentioned Presonus device even after being connected to an active USB hub. Résumé At least for 2 USB class compliant audio interfaces I only noticed an issue with my iPad 2 (an absolutely outdated iPad) but even not with my old Linux PC, a mobo and CPU much, much, much older than the iPad 2. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user