The 3M follows in the fine tradition of our highly-respected 2M MIDI Merge Unit, but the 3M merges from three inputs in place of just two. The program inside this mains-powered unit has the extra fast, efficient code needed to successfully combine three simultaneous MIDI datastreams.

Extended information

Comprehensive specification
When the data traffic is especially heavy, It may be necessary for the merge processor to reject some MIDI data, especially if undesirable delays are to be avoided. 3M does this gracefully and automatically according to a priority discard system, redundant data being thrown away first. 3M understands and sends `running status'.

Time-critical System Common messages, including Time Code, are retransmitted at the first opportunity. Time Code and the associated Universal Real Time SysEx messages are only accepted on MIDI IN A.

The 3M can handle System Exclusive messages of any length on any input.

Interlocks prevent conflicts
As on all our merge boxes, System Real Time messages are accepted on any input and are retransmitted as soon as possible. Clocks are managed by an intelligent interlock system.

Pitch bend messages, relating to the same MIDI channel, but coming from different inputs, are also controlled by an interlock system.

Useful neat package


In the example installation in the diagram above, the sound module can render the combined commands of the synth, keyboard and sequencer. The sequencer can record the synth while it simultaneously plays the sounds on the sampler.

Like many of our products,The 3M MIDI Merge Unit is exceptionally compact at only 109mm x 109mm x 40mm. This includes the built-in mains (ac) power supply (110 V ac or 230 V ac, 50Hz or 60Hz - as required). This provision obviates the need for an external ac adaptor. The integral mains lead (ac power cord) comes with a plug.

The useful 3M has, of course , three MIDI inputs, and provides thru outputs for two of these. The MIDI output of the merge processor is available on the third output socket.