The recording quality and the quality of the output signal are properly, including with regard to the noise.
The volume on the headphones (output) is very high, which for me as a singer importance (eg feedback during recording).
Connectors for mic and guitar are working properly, the phantom power.
So you have a silent multitrack recorder. Unfortunately, only with 44kHz / 16-bit but that is the limitation of the iPad concept.
For most this is sufficient.
iPad software is not here but you can work with it just fine using tools like GarageBand.
The inserted device is supplied with power and charged.
The Midi In & Out I do not use currently.
What is missing:
- No digital inputs or outputs. Thus the use is rather limited, together with other devices.
- Battery supply would have been perfect sense, then you could operate the complete system independent of mains supply.