M4U hits the perfect balance between MIDI connectivity and mobility. With 4-in/4-out 64 MIDI channels and the same hardware based MIDI timing technology as M8U, M4U guarantees the best performance in your live concert. With compact 1/3 rack size, USB bus power and Plug-n-Play installation, M4U is truly easy to use and easy to carry. M4U is specially optimized for usage under Windows, but also can be used under Mac OS X and Linux with basic support. No drivers are needed for Windows XP and above.

Note: the newer M4U XT has since replaced the existing M4U.

Features compact device (1/3 rack size) 4-in/4-out, 64 MIDI channels High-speed connection to USB-equipped PC or Mac Hardware MIDI time sync MIDI activity indicators for each port Plug-and-play installation USB bus-powered Windows 2000/XP/Vista/7/8, Mac OS X and Linux compatible compact design with around 14.5 cm x 10.0 cm x 4.5 cm

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