The OctaMic XTC is one of the most versatile RME interfaces ever built. On the one hand it is the perfect extension to the Fireface UFX to add 8 fully integrated microphone channels, multiple formats of digital audio, and much more. On the other hand the OctaMic XTC can be used as stand-alone interface to record audio (e.g. microphones) on Apple OS/iOS devices connected via the integrated driverless class compliant mode, to give one example.