Controllers 0 to 31 were originally specified as optionally 14 bit resolution controllers. To use them as 14 bit controllers the msb is transmitted as one controller (0-31), and the lsb is transmitted as a second controller (32-63 respectively). Controller 0 and Controller 32 have been defined as a Bank Select that qualifies Program Changes [sic.] and both messages must always be transmitted together.

In practice, it was impossible to differentiate between 14 and 7 bit usage, so 14 bit resolution never really worked.

Controllers 64 to 95, originally defined as switches, may now also be used as 7 bit resolution controllers.

Mode change messages are only received on the Base Channel that an equipment is set to. Messages 124 to 127 also act as an All Notes Off message. When Omni Mode is set to on the receiver responds to all Channel Voice messages, ignoring the Channel Number.