iConnectivity AUDIO4c Audio and MIDI Interface
*However* - the software support is shocking. The current suggested config application (Auracle) doesn't even have the full configuration functionality to manage the device.
The *old* deprecated iConfig application (downloaded directly from the iConnectivity website) actually has the full functionality for configuring the device - but the official apps on the iOS appstore crash on opening (there are however 3rd party (free) apps on the iOS appstore which *do* work).
All in all, a very useful and configurable device, let down by (very) poor software, but subsequently saved by 3rd party developers and still (barely) functional old software.
Just stay away from Auracle until (if?) it ever gets updated to fully control the devices it's meant to be configuring...
If I could add a more nuanced "score" it would be:
4.5/5 for the hardware capabilities
2/5 for software support