The IMDI HEART module is the central module for using IMDI (the "internal MIDI" transmision) within AE modular.

It receives MIDI, either by a TRS adapter, or via USB-C (the module appears as Class-compliant MIDI device on a computer); the incoming data is splitted up to 16 outputs carrying IMDI data. Each output contains the information of one (or more) MIDI channel(s) and a freely assignable note range, in the standard MIDI data rate or at a much higher data rate. Realtime data, like MIDI start / stop / clock is provided as gate / trigger outputs; the 1 / 96th clock can be divided to other, slower clock rates.

The outputs can drive then modules that can receive IMDI, like the micro oscillators (uOSC, uFM, uPOLY) and other upcoming IMDI capable modules.

The 16 chains of IMDI controlled modules you get with IMDI HEART is enough for quite complex setups, so in most cases, one IMDI HEART will be enough.