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MIDI Pipe Driver w/104 Negative outputs
MIDI Pipe Driver w/104 Negative outputs
Brand: Classic MIDI Works
Product Code: 11-MID-IOUT-N
Availability: In Stock
Price: USD499.00
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The MIDIOUT Driver Board turns its output pins on or off based on MIDI input data.

This board is available in two versions, each with 104 outputs. The MIDIOUT-P has positive outputs for driving active-high (negative common) relays and pipe chest magnets. Conversely, the MIDIOUT-N has negative outputs for active-low (positive-common) relays and pipe chest magnets.

A convenient built-in MIDI-merge feature allows several MIDIOUT boards and MIDI devices to be cascaded.

The MIDIOUT board has a user selectable DIP-Switch setting to control the output pins via MIDI channel(s). Depending on the mode of operation, users can select whether to use one or two MIDI channels. In the first mode, all outputs are controlled using one MIDI channel. When the user selects the second mode, the board is divided into two halves. Thus, 52 output pins are controlled by the MIDI channel specified, while the other 52 outputs react to MIDI messages on a MIDI channel that is one higher than the specified channel.


  1. Available in two versions: Positive drive and Negative drive.
  2. 104 outputs can drive relays, motors, solenoids, LEDs, and incandescent lamps.
  3. DIP-Switch allows user to select output MIDI Channel (1-16).
  4. Capability to receive on one MIDI channel (104 outputs) or two MIDI Channels (52 outputs each).
  5. MIDI-merge feature to allow cascading several MIDIOUT boards.
  6. Two built-in diagnostic LEDs.
  7. Can be computer controlled via MIDI.
  8. Additional ‘Output Fault’ LED present on the MIDIOUT-P board.


The MIDI Driver Board can be used by organ-builders as well as hobbyists requiring controllers via MIDI. Organ-builders typically use the Classic MIDI Driver Board as a pipe driver to allow connection of wind-blown pipes to an electronic organ. Thus, a rank of pipes may be added to an organ with MIDI outputs. In addition, pipes may be played using MIDI from a computer. MIDI information received on the MIDI IN connector is transmitted on the MIDI OUT connector thus, multiple boards may be chained together to add extra pipes, LEDs, and incandescent lamps.

The MIDIOUT boards are not limited to pipe-organ applications. For example, in model railroad systems, these boards can be used to drive motors, solenoids, LEDs, and incandescent lamps, etc. Almost any computer-controlled MIDI switching system can benefit from the use of a MIDI Driver board.

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Classic MIDIWorks is an online retail store that offers top of the line hardware/software for those aiming to put together a Virtual Pipe Organ powered by Hauptwerk. If you are looking to putting together a system from scratch or adding MIDI to an existing organ, then you have come to the right place!



All our hardware is modular. This means that instead of simply offering x models with an x number of manuals, shoes, toe studs, etc...  you can select what you'd like and we can help you put together the organ that YOU WANT. Our knowledgeable staff is happy to help you every step of the way from start to finish. We pride ourselves in great customer support and ensuring that you get to playing your Hauptwerk Organ as fast as possible. 




A MIDI Works system is both cost and space efficient, fitting in almost any space. Paired with good speakers and/or headphones, it is the ideal practice organ. Regardless if you are a professional or hobbyist organist, you can enjoy playing from the comfort of your own space whenever you want.



The virtual pipe organ is an instructor's best friend. Students can have the freedom to play particular pieces on particular organs. In just a matter of seconds, students can be playing on a French organ one minute, then an English or German organ the next!



2800 John Street, Unit 4

Markham, Ontario

Canada, L3R 0E2


+1 (888) 812 9717