This is also how all communication is handled between Fractal Audio Axe-FX units and PC/Mac software Axe-Edit. Everything is done over MIDI, and nearly everythi

This is also how all communication is handled between Fractal Audio Axe-FX units and PC/Mac software Axe-Edit. Everything is done over MIDI, and nearly everything within MIDI via SysEx messages. Parameters of FX blocks can be individually controlled with short specific SysEx messages targeted toward the FX block and then the specific parameter within combined with its new value to be set with a checksum to wrap it all up. MIDI's low bandwidth (3125 bytes/sec) explains why it's so slow to upgrade and also why there is such high latency in modifying parameters and syncing the Axe-Edit software with the Axe-FX hardware unit.