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Switch Input Board for MCU w/22K inputs
Switch Input Board for MCU w/22K inputs
Brand: Classic MIDI Works
Product Code: 11-SIB-SIB-4H
Availability: In Stock
Price: USD240.00
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Control Unit Switch Input Board

The Switch Input Board converts up to 64 active-high (+12V) inputs to an 8x8 matrix system. Eight tri-state octal invertors are used to select eight groups of eight switch-data inputs onto a common octal bus as decided by the outputs of a Binary-to-Octal decoder. This has three address inputs and one Board Select input. The address lines define which one of the eight groups of input switch-data is sent to the output buss while the Board Select determines which one of the five SIB-4 boards will be sending this data. The board has pull-down inputs and high-resistance series resistors to protect against static and excessive input voltages. The power system comprises a 5-volt Zener diode as a regulator.

Technical Specifications

  • Switch inputs on right-angle molex terminals.
  • Inputs 1-64 in 8 groups of 8. Signals 0-12V. +12V = On.
  • Power: 8-15V using on-board regulator.
  • Size: 1.875" x 10.5".

Shipping Information

The Control Unit Switch Input Board is normally purchased with control units such as the MCU, CCU, and PCU. Thus, it will be shipped installed within the unit. If it is purchased for upgrade purposes it will be shipped separately.

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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