Tie Studio MIDI Interface 4i4o – 4-In/4-Out 64-Channel USB-MIDI Hub

The Tie Studio MIDI 4i4o gives you reliable, high-channel MIDI routing in a compact, plug-and-play unit. With four MIDI inputs, four MIDI outputs, built-in merge functionality, and bus-powered USB connectivity, it simplifies the setup for producers, live performers, and anyone working with multiple MIDI devices.

Key Features

• 4 MIDI inputs + 4 MIDI outputs: Allows you to connect multiple controllers, synths, drum machines and route MIDI in and out in versatile ways
• 64 MIDI channels total: Full channel capacity across all inputs/outputs for expanded use
• MIDI merge on inputs 1 & 2: Combines signal from two inputs into one stream—useful for layering or simultaneous control without additional hardware
• USB-bus powered: No external power supply needed; draws power through USB connection to computer or host device
• True plug & play: Works without installing drivers on MacOS or Windows—it’s ready to go out of the box
• Compact metal build: Durable chassis and small footprint make it suitable for desktop, studio racks, or travel setups

Customer Benefits

Now you can connect all your MIDI gear without sacrificing timing or getting tangled in adapters. The merge feature helps when using dual controllers or combining inputs, while the USB-powered design keeps things simple and clean. Whether you’re in the studio, on stage, or doing hybrid setups, the 4i4o delivers dependable MIDI performance.

Quick Specs

• Inputs: 4 × 5-pin DIN MIDI
• Outputs: 4 × 5-pin DIN MIDI
• MIDI channels: Up to 64 channels total across all ports
• USB connection: USB-A (host cable) for data and power
• Merge function: Inputs 1 & 2 can be merged into one stream
• Power: USB-bus powered; no external PSU required
• OS compatibility: Works with macOS, Windows; plug-and-play, no driver install needed
• Dimensions (W × D × H): 13.0 × 7.5 × 3.8 cm
• Weight: 250 g

What’s in the Box

• Tie Studio MIDI 4i4o unit
• USB-A to USB cable
• Quick start guide / documentation

Use Cases / Ideal For

Great for studios with multiple MIDI hardware, live rigs with synths/drum machines, hybrid digital/analogue workflows, connecting legacy MIDI gear, or anyone who needs to simplify MIDI routing without latency or driver hassles.

Compatibility

Compatible with Windows and macOS computers that have USB ports. Works with standard 5-pin DIN MIDI devices. No external power or special drivers needed. Recognised by DAWs and MIDI software immediately.

Pros & Cons

✅ Pros:

• Large I/O count (4 in / 4 out) for the size and price
• Merge function adds flexibility for combining devices or layering controllers
• USB-powered means fewer cables and power bricks
• Plug & play simplicity—works reliably without drivers
• Metal casing and sturdy build make it road-worthy

⚠️ Cons:

• No built-in MIDI thru for replicating signals across all outputs simultaneously without routing software
• Labeling of some ports may be minimal—takes care to plug in inputs/outputs correctly
• USB-powered means depending on the USB host’s power; some hubs may not provide enough for very power-hungry uses

The Tie Studio 4i4o is a solid choice for full-featured MIDI connectivity in a compact unit. If your setup involves many devices and you want clean, dependable routing without hassle, this interface delivers.