10 Best Multiport MIDI Interfaces for Flexible Studio Routing in 2026

The best multiport MIDI interfaces make it easier to connect hardware synths, controllers, drum machines, and computers without constantly repatching cables. They can expand MIDI input and output, merge signals, split one source across several devices, or add USB host functionality to a hardware setup.

This roundup compares 10 options across those use cases, from high-port-count studio interfaces to compact portable adapters. Use the buying guide below to narrow your choice by routing needs, connectivity, portability, and system compatibility.

Best 10 Multiport Midi Interfaces Picks for 2026

Best All-Around Hub – 8-Port USB MIDI Interface

The ESI M4U eX is a flexible choice among multiport MIDI interfaces for computer-based studios and live rigs. Its eight adaptable MIDI ports, USB 3.0 hub, class-compliant operation, and standalone routing make it suitable for setups that need both connectivity and control.

Best For: Home studios, professional MIDI rigs, and users who also need extra USB connections.

Pros:

• Eight configurable MIDI inputs or outputs with visual LED indicators
• Built-in USB 3.0 hub provides three additional USB connectors
• Standalone merging and routing with low-latency operation
• Works with Windows and macOS and supports major DAWs

Cons:

• Its broader hub and routing feature set may be more than simple MIDI setups require
• Optional Windows driver is needed for advanced multi-device and multi-client operation

The M4U eX stands out when you want one central device for multiple MIDI connections and USB peripherals. It is a particularly practical pick for expanding a studio without adding several separate boxes.

Best MIDI Merger – MERGE-5 Pro MIDI Merger

The MERGE-5 Pro is a focused option among multiport MIDI interfaces for combining several controllers into a manageable MIDI stream. It can merge up to five MIDI inputs, route the result through two MIDI outputs, and operate independently of a computer.

Best For: Performers and hardware-based setups that need multiple MIDI sources merged into shared outputs.

Pros:

• Merges up to five MIDI input signals into one data stream
• Provides two MIDI outputs for flexible hardware routing
• Individual MIDI-port filtering helps manage incoming data
• Supports notes, CC, program changes, clock, time code, and SysEx

Cons:

• Its supplied information emphasizes merging rather than broad USB hub functionality
• Advanced routing may require more setup than a simple one-controller connection

Choose the MERGE-5 Pro when your main challenge is combining several MIDI sources. Standalone operation and per-port filtering give it a useful role in hardware-heavy performance or studio systems.

Best Simple Splitter – MIDI Thru-6 Box

The MIDI Thru-6 Box is a straightforward choice among multiport MIDI interfaces when one MIDI source needs to reach several devices. It sends incoming MIDI messages to six outputs through standard 5-pin connections and uses USB power.

Best For: Synth, keyboard, and live-performance setups that need one-to-six MIDI distribution.

Pros:

• One MIDI input feeds six MIDI Thru outputs
• Passes standard MIDI messages across 16 channels
• USB-powered design requires no batteries
• Compatible with common MIDI software and operating systems

Cons:

• It distributes one input rather than merging multiple MIDI sources
• It does not provide the configurable filtering described for some other multiport devices

This box is a good fit when reliable signal duplication matters more than computer-based routing. Its uncomplicated one-in, six-out layout makes it easy to connect several MIDI instruments to one controller.

Best High-Output Splitter – THRU-16 MIDI Splitter

The THRU-16 is designed for large MIDI distribution systems, converting one MIDI input into 16 outputs. It adds editable filters, individual output switches, and indicator lights, making it one of the more controllable multiport MIDI interfaces for complex hardware rigs.

Best For: Large keyboard, synth, and performance systems requiring many independently managed MIDI outputs.

Pros:

• Expands one MIDI input to 16 MIDI outputs
• Editable MIDI filters are available for each output
• Individual switches and indicator lights simplify output control
• Supports notes, CC, program changes, clock, time code, and SysEx

Cons:

• Its one-input distribution design is not intended for merging multiple MIDI sources
• Sixteen outputs may be unnecessary for compact setups
• The supplied warranty description is limited to 30

The THRU-16 is the specialist choice for systems with many downstream MIDI devices. Per-output filtering and switching provide more control than a basic thru box, especially when different instruments need different MIDI data.

Maximum Routing Power – CME H12MIDI Pro

For complex setups, the CME H12MIDI Pro is one of the most expandable multiport midi interfaces available. It combines six USB-C host ports, six TRS MIDI inputs and outputs, and a dedicated computer connection for routing keyboards, controllers, synths, pedals, and other class-compliant MIDI gear.

Best For: Large hardware rigs, pedalboards, live setups, and computer-free MIDI routing.

Pros:

• Six USB-C host ports support up to 16-in/16-out virtual MIDI.
• Six-in/six-out TRS MIDI connectivity includes selectable Type A/B modes.
• Advanced thru, split, merge, filter, mapping, and preset functions.
• Supports computer and standalone operation with 5V USB-C or 9V DC power.

Cons:

• Its extensive routing capabilities may be more than a small setup needs.
• TRS-to-5-pin MIDI connections require compatible CME cables.

The H12MIDI Pro stands out when port count and flexible signal management matter most. Its compact aluminum housing and dual-power design also make it practical for mobile rigs and pedalboards.

Pedalboard Control – CME U4MIDI WC

The CME U4MIDI WC is a compact choice for musicians seeking straightforward multiport midi interfaces with reliable two-way MIDI communication. Its 2-in/2-out 5-pin MIDI design, standalone power options, and routing tools suit guitar pedals, synths, controllers, and compact hardware systems.

Best For: Guitarists, pedalboards, and compact MIDI setups that need computer-free operation.

Pros:

• 2-in/2-out MIDI connectivity provides zero-latency, jitter-free transmission.
• USB-C support works with macOS, Windows, iOS, Android, Linux, and ChromeOS.
• Supports thru, split, merge, mapper, and filter configuration.
• Runs from 5V USB or 9V DC and offers optional WIDI Bluetooth MIDI.

Cons:

• Only two MIDI inputs and two MIDI outputs are provided.
• Advanced configuration requires the UxMIDI Tools software.

With its reinforced, pedalboard-friendly enclosure and flexible power choices, the U4MIDI WC is a practical fit for focused rigs. It offers useful processing features without the larger port count of a full hardware hub.

Audio-and-MIDI Starter – Arturia MiniFuse 2

The Arturia MiniFuse 2 is a versatile alternative for creators who need audio recording alongside basic MIDI connectivity. Rather than focusing on numerous MIDI ports, this USB interface combines 5-pin MIDI input and output with microphone, instrument, line, headphone, and USB hub connections.

Best For: Beginners, home studios, vocalists, guitarists, and producers recording audio with synths or drum machines.

Pros:

• Includes 5-pin MIDI input and output for synths, controllers, and drum machines.
• Two combo microphone/instrument/line inputs include 48V phantom power.
• Provides balanced outputs, a headphone output, USB hub, and loopback support.
• Includes creative software and a five-year warranty.

Cons:

• It offers one MIDI input and one MIDI output rather than multiple MIDI ports.
• USB compatibility is listed for Windows and macOS, not the broader mobile range of the CME units.

The MiniFuse 2 makes more sense for an audio-first workflow than for a large MIDI hardware network. Its combination of recording inputs, monitoring, bundled software, and basic MIDI I/O makes it a strong all-around home-studio interface.

Best for Advanced Routing – CME H4MIDI WC Advanced USB Host MIDI Interface

The CME H4MIDI WC is one of the more versatile multiport MIDI interfaces for guitarists, producers, and hybrid setups. It combines 5-pin DIN MIDI, USB host connectivity, USB-C computer integration, advanced routing, and optional WIDI Bluetooth expansion in a compact enclosure.

Best For: Guitarists and producers who need extensive MIDI routing, multiple USB MIDI devices, and flexible standalone operation.

Pros:

• Supports up to 8 USB MIDI device ports through a standard USB hub.
• Offers 4-in/4-out virtual MIDI ports over USB-C.
• Includes MIDI thru, split, merge, mapper, and filter functions.
• Can run from 5V USB or 9V DC and stores four presets.

Cons:

• Optional WIDI Bluetooth functionality requires the WIDI Core module.
• Advanced configuration may require the HxMIDI Tools software.

Choose the H4MIDI WC when your setup needs more than basic MIDI conversion. Its combination of multi-device USB hosting, routing tools, preset recall, and dual power options makes it particularly suitable for complex studio or pedalboard systems.

Best Compact Hub – CME H2MIDI Pro Compact USB Host MIDI Interface

The CME H2MIDI Pro is a compact choice among multiport MIDI interfaces for connecting USB MIDI gear with traditional 5-pin DIN equipment. It supports USB host devices without a computer and adds computer connectivity, routing controls, and preset switching in a very small format.

Best For: Musicians who want a space-saving interface for modern USB MIDI devices, legacy DIN hardware, and hybrid rigs.

Pros:

• Connects class-compliant USB MIDI gear directly to DIN MIDI hardware.
• Can expand to up to 8 USB MIDI device ports with a standard hub.
• Uses a 32-bit processor for handling clock, SysEx, MTC, and MPE data.
• Provides routing, filtering, mapping, and up to four saved presets.

Cons:

• Provides 2-in/2-out virtual MIDI over USB-C, fewer than the H4MIDI WC.
• Its DIN connection is limited to 1-in/1-out MIDI I/O.

The H2MIDI Pro is a strong fit when portability matters but you still need flexible MIDI management. Its small footprint and broad operating-system compatibility make it practical for pedalboards, compact studios, and mobile setups.

Best Wireless Option – CME WIDI Uhost Bluetooth MIDI Interface

The CME WIDI Uhost takes a wireless approach to multiport MIDI interfaces by adding Bluetooth MIDI to compatible USB MIDI controllers and computers. It supports USB host and client connections, automatic pairing with WIDI devices, and low-latency Bluetooth MIDI for cable-free studio or stage setups.

Best For: Performers and producers who want to reduce MIDI cabling while connecting compatible USB MIDI equipment wirelessly.

Pros:

• Adds Bluetooth MIDI to class-compliant USB MIDI controllers and computers.
• Supports MIDI messages including SysEx and MPE.
• Offers approximately 3 ms latency between two WIDI devices and sub-1 ms jitter.
• Supports Bluetooth MIDI groups of up to five devices for merge or split setups.

Cons:

• General Bluetooth pairing does not work; dedicated Bluetooth MIDI pairing steps are required.
• Windows 10/11 Bluetooth MIDI use requires the Korg BLE MIDI driver.
• USB host connectivity requires a USB OTG cable.

The WIDI Uhost is the most suitable option here for cable-conscious musicians. It is especially appealing for wireless controller setups, though compatibility, firmware updates, and platform-specific pairing requirements should be checked before purchase.

How We Picked the Best Multiport Midi Interfaces

We selected these Multiport Midi Interfaces by comparing their port counts, routing roles, connection types, portability, and practical setup requirements. The list includes conventional USB MIDI interfaces, dedicated MIDI splitters and mergers, USB host devices, wireless MIDI hardware, and an audio interface with integrated MIDI connectivity.

Because “multiport” can mean different things, we considered more than the number of sockets. Some products are designed to provide several independent outputs, while others combine multiple inputs, connect USB MIDI devices without a computer, or extend a hardware rig wirelessly. The right choice depends on the signal flow you need rather than on port count alone.

Quick Comparison

• For computer-based studios: Look for class-compliant USB connectivity, dependable drivers, and enough physical MIDI ports for your current hardware.
• For MIDI splitting: Dedicated thru boxes provide multiple simultaneous outputs and are useful for sending one controller or sequencer to several devices.
• For combining sources: MIDI mergers are suited to setups where several inputs must feed one downstream MIDI stream.
• For standalone hardware: USB host interfaces let USB MIDI controllers or devices communicate with traditional five-pin MIDI equipment without relying on a computer.
• For portable rigs: Compact interfaces and wireless adapters reduce cable clutter, but may offer fewer routing options.

Key Buying Factors for Multiport Midi Interfaces

Port Count and Signal Direction

Check the exact number of MIDI inputs, outputs, and thru connections. An interface with several outputs is not necessarily capable of independently routing every input. If you need separate destinations, confirm whether the outputs are independently addressable or simply duplicated.

Merge, Split, and Filtering Functions

A merger combines signals, while a splitter or thru box duplicates one MIDI stream. Some advanced units also filter channels or messages, which can prevent unwanted notes, controller data, or clock information from reaching selected devices.

USB Host Compatibility

USB host products are useful when you want to connect USB MIDI gear directly to DIN MIDI equipment. Confirm the connector type, power requirements, and supported devices before buying, especially for bus-powered controllers and older hardware.

Computer Support and Power

Class-compliant models are generally convenient for modern computers, but verify operating-system support and whether the unit needs external power. Powered hardware may be preferable in larger rigs or when several connected devices draw current.

Latency, Reliability, and Expandability

Hardware MIDI routing should remain stable under simultaneous activity. Consider opto-isolation, build quality, editable routing, and whether the interface leaves room for future instruments. Extra ports can be worthwhile if your setup is likely to grow.

Who Should Buy Which Multiport Midi Interfaces?

Choose a high-port-count USB interface if you are building a computer-centered studio with several keyboards, modules, or controllers. Choose a dedicated thru box if one MIDI source needs to drive many devices at once. A merger is the better fit when multiple controllers or sequencers must share one MIDI destination.

Choose a USB host interface if your setup combines USB-only MIDI devices with traditional five-pin hardware. Portable CME-style options suit mobile rigs and compact workstations, while a wireless WIDI adapter is useful when reducing cable runs is more important than maximizing physical ports. If you also need recording and audio monitoring, an audio interface with MIDI may provide the most efficient all-in-one solution.