(B-Stock) ESI M4U eX 8-Port MIDI Interface

B-stock information

Warranty:	This product comes with a 3-year warranty.
Complete	Yes
Original packaging	Missing (now in Bax Music box)
Condition of product	Traces of use (no damage/scratches)
What is a B-Stock Item? Any item we can no longer sell as new is labelled B-stock. This can be for a number of reasons, including damaged or missing packaging, or because the item shows light signs of use. In any case, you can expect the item to work just fine. Always Read the B-Stock Info Every B-stock product page includes relevant information about the item. Be sure to read it in full! Under the Product Information tab, you will find the original product description and specifications, which may refer to accessories that are not included with the B-stock item. This can be a cable, a remote control, software or any other accessory. B-Stock Product Photos B-stock photos can give you a good idea of the condition of the item, its packaging and (missing) contents. Here, what you see is what you get. The photos usually include: A photo of the original item A photo of the B-stock item plus included packaging and accessories (if applicable) A photo of the front of the B-stock item A photo of the back of the B-stock item Photos of any damage (if applicable) Original Packaging Status Packaging in good condition: undamaged, at most some tape residue Packaging damaged: box has dents, tears and/or holes Packaging missing: has been replaced with a Bax Music box. Item Condition Status: New: the product itself is like new, but the packaging may no longer look like new Traces of use (no damage/scratches): smudges, fingerprints and/or dust Scratches/damage: product has scratches and obvious damage Can I Return a B-Stock Item? Yes, our 30-day money-back guarantee also applies to B-stock items. Do I Get a Warranty on B-Stock Items? Yes, the standard warranty period usually applies to B-stock items as well.

(B-Stock) ESI M4U eX 8-Port MIDI Interface
Product no: 5000-0026-9466 Bax Music Warranty: This product comes with a 3-year warranty.

General

The ESI M4U eX is a compact but powerful MIDI interface that's been kitted out with eight MIDI ports that can be used as inputs or outputs in various configurations. Since you're free to decide the set-up, the M4U eX is amazingly flexible and, what's more, the routing happens automatically and is based on the inputs/outputs that you've assigned and hooked up to other MIDI ports. Meanwhile, the LED indicators on the front panel of the interface will indicate exactly which ports are active. In addition to a MIDI interface, the M4U eX doubles as a USB 3.0 hub for iLok dongles and USB/MIDI keyboards, which pretty much transforms it into a central command console for your studio. Boasting an especially low latency, this ESI-built tool can even be set up as a standalone unit, so without the need for a computer.

Specifications

Product features

Number of MIDI inputs	8
Number of MIDI outputs	8
Complete	Yes
Data connection	USB
Sustainable product	not specified
Original packaging	Missing (now in Bax Music box)
Condition of product	Traces of use (no damage/scratches)
Interface type	stand-alone

Weight and dimensions including packaging

Weight (incl. packaging)	916 gr
Dimensions (incl. packaging)	22,5 x 15,8 x 11,8 cm

Product specifications

USB 3.0 MIDI interface and hub
100% class compliant, no drivers required
USB bus powered
8 MIDI ports; 4 on the front and 4 on the back
automatic input and output detection
every port can serve as a MIDI input or MIDI output
can be used as a standalone unit
can be used as a MIDI thru box in standalone mode to send a MIDI signal to seven outputs
can be used as a MIDI merger in standalone mode to send seven MIDI signals to a single output
3-port USB 3.0 hub with 5V external power supply (included) to power connected USB devices
can be used in combination with other M4U eX interfaces
backwards compatible with: USB 2.0
dimensions: 175 x 12 x 45mm
included:
- power adapter
- Cubasis LE sequencer

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Edwin Prasing October 20, 2025

Wrote the following about ESI M4U eX 8-Port MIDI Interface with USB 3.0 Hub

Apparaat is geweldig, zeker een aanrader.
Jammer dat jullie levering nooit is aangekomen, maar gelukkig toch nog eentje kunnen scoren bij de concolega

Ferenc July 21, 2025

Wrote the following about ESI M4U eX 8-Port MIDI Interface with USB 3.0 Hub

Prima apparaat. Zonder drivers. Heb Window 11 en programmeer met Cubase.
Was even uitzoeken met het toekennen van in en out in. Moest drie keyboards verbinden en schakelen met één als hoofdkeyboard. Werkt nu perfect.
Er zijn ook goedkopere merken. Niet doen! zijn waardeloos.
Bij Bax zit je goed.

Dirk P. December 10, 2022

Wrote the following about ESI M4U eX 8-Port MIDI Interface with USB 3.0 Hub

Simpel apparaat, geen drivers installeren maar de USB insteken en werken!
8 midi poorten welke als midi uit, als in kunnen worden gebruikt. Het is maar net waar de behoefte ligt.
Hij wordt gebruikt in Windows10, 64 bit met FL Studio 21 in een hybride opstelling met hardware als software synths.

Ik had deze jaren terug al moeten hebben, een verademing!
En in Goes op voorraad, dus super snel geleverd.

Ron October 5, 2022

Wrote the following about ESI M4U eX 8-Port MIDI Interface with USB 3.0 Hub

Goed product, zonder drivers direct te gebruiken. Ik maak gebruik van WIndows 11 en Cubase, de ESI M4U eX is direct te gebruiken binnen Cubase.

Snel geleverd door BAX, TOP!