ESI M4U eX

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ESI M4U eX

ESI

M4U eX

4.5 Expert Rating

Product Info

Article Number: 451849
Brand: ESI
Model: M4U eX
Price: $217.80

* Prices may vary. Check retailer for current pricing and availability.

The ESI M4U eX is a solid, affordable MIDI interface for musicians and producers needing a lot of ports. Its thru/merge functionality is a real bonus, making it versatile for complex routing scenarios. It's a great choice for those wanting reliable performance without a premium price tag.

Product Description

  • ESI M4U eX
  • USB 3.0 MIDI Interface
  • With a total of 8 MIDI ports
  • Each port can be used as input or output
  • Automatic input and output detection
  • Multicoloured LEDs for status display
  • Additional functions allow the interface to be used as a thru or merge box
  • Powered via USB or via the AC adapter included
  • Class-compliant - without drivers under Windows 7
  • Windows 8.1
  • Windows 10 and Mac OSX (32/64 Bit)
  • Dimensions: 175 x 120 x 45 mm
PROS
  • • 8 ports offer exceptional flexibility for complex setups
  • • USB 3.0 ensures rock-solid latency for demanding projects
  • • Thru/Merge capabilities expand routing options significantly
  • • Compact size makes it ideal for portable or tight studio spaces
CONS
  • • Plastic enclosure feels a bit budget-oriented, lacks premium heft
  • • LED indicators, while colorful, can be overly bright in a dark room
  • • Limited advanced routing customization beyond basic thru/merge

Product Video

Key Features

MIDI Ports 8 (4 In, 4 Out)
USB USB 3.0 Type-B
Channels 16
Standalone Yes, Thru/Merge functionality
Power USB or AC Adapter (included)
Weight 0.75 kg

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Frequently Asked Questions

Yes, it's class-compliant, so it should work fine with older software, though you might see slightly higher latency.
It's surprisingly good for the price; while not as feature-rich as a dedicated merge box, it handles basic merging and routing very reliably.
The AC adapter is designed to be fairly universal, but double-check the voltage rating on the adapter itself to ensure compatibility with your local power supply.

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