I use an Iconnect 4 + and it will work without an IPad or computer. I believe the 2 is the same, just less connections. With my 4 + I can set up routing with an Idevice or a computer and once it’s set up you can unplug those devices and use standalone. It works great and the routing is extremely flexible but takes a second to wrap your mind around, and yes… will do merging and a lot more. You can also save and load different configurations from your computer/IPad. When you first hook it up you need to adjust the default routing which has basically every port sending and receiving to and from every other port and can lead to midi madness. The 4+ is awesome because it also is a midi usb host so you can connect din and usb midi with no computer. And then there’s audio pass through.