> What is the difference between IconnectMIDI4+ and the new MIO4 appart from the look ?
iConnectMIDI4+ USB Device ports cope with USB Audio. mio4 is a MIDI only interface, no USB Audio support, hence no Audio passThru feature.
iConnectMIDI4+ is an Apple certified product, it has native iOS support, it can be connected to iOS devices using the included iConnectivity 30 pin or iConnectivity Lightning cable straight out of the box at no additional cost. mio4 has no native iOS support, however it is compatible and will work with iOS devices using either the Apple 30 pin Camera Connection Kit or Apple Lightning USB Camera Adapter (both sold separately via 3rd party) as a MIDI interface.