Hello 56Tone,

As long as the H9 is set to the proper MIDI channel and you’re transmitting on the same MIDI channel from your controller, there should be open communication between the devices. To start troubleshooting, let’s get some obvious questions out of the way:

Have you tried isolating the H9 with your MIDI controller or AX8 so that it’s the only thing in the chain?

Are you sure you’re connecting MIDI Out from your controller to MIDI In on the H9?

Have you tried another MIDI cable?

Do you have a USB cable hooked up to the H9 by any chance?