The basic device offers space for 14 plug-in modules. They can be the sane or different modules depending on the wishes of the user.
The connection of the modules is realized via a parallel bus system. The sequence of the modules is completely variable.
Two Digital Channels
The bus system contains two digital control signals and two digital high speed audio channels which can be used independently from each other.
is made by a control unit available in each device together with the LCD display and the bit generators giving the command .