The i-Rig Pro is processed handy but very tough at first glance and robust. All cables for connecting to the iPhone 4/5 and USB are connected via a combi-connector, so you decide logically for a device. The MIDI cable is connected via a jack plug and can be operated in parallel to the microphone / guitar. Microphone and guitar are not parallel, since this is also a combi-connector. The level needs to be adjusted with guitar and microphone, this will be very intuitive supported by a colored LED. Otherwise you have a nice Distortion effect on a guitar :)). Cooperation with GarageBand worked perfectly in my iPhone 5 with iOS 7. The pedal of my Midi keyboard was not recognized, but that could be due to GarageBand. All in all I am very satisfied. The test with a microphone is still pending, I will add soon. A case / bag for i-rig and the cable would be very handy.