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The MLA-XLR from JL Cooper is designed to act as a single channel, bi-directional, long distance amplifier or driver for MIDI signals. While the normal MIDI protocol specifies a maximum cable distance of about 50 feet, this is sometimes not sufficient for some installations.
The MLA-XLR takes a MIDI input and converts it to a balanced, differential signal using the RS-422 specification. At the other end, another MLA-XLR detects the signal using a sensitive receiver that has a high degree of noise immunity. Connecting the two MLA-XLRs are two standard, shielded, twisted pair microphone cables.
The combination of a low impedance, differential driver coupled with a sensitive differential receiver signal lends itself to long distance, error free installations and making it possible to send a MIDI signal through 1000 feet of cable or more. The MLA-XLR is compatible with the JLCooper MLA-1 and MLA10.
Note: Installation requires a MIDI Line Amplifier at either end
MIDI line amplifier that allows for MIDI cable runs over 1,000 foot using standard XLR microphone cable