Introduction
The 3rd generation X series MIDI keyboard controllers, including the X4 III, X6 III, and X8 III, are designed to provide a comprehensive and intuitive control experience for music production. The X6 III model features a full-size, velocity-sensitive keyboard, along with a versatile set of controls including four knobs, six buttons, and responsive Pitch and Modulation touch strips. This series incorporates 16 Smart Scales, such as Chinese pentatonic, Japanese scale, and Blues scale, enhancing creative possibilities. Furthermore, the X6 III supports Mackie Control and HUI protocols, ensuring seamless integration with various Digital Audio Workstations (DAWs) for an optimized workflow.

Image: Top-down view of the MIDIPLUS X6 III MIDI Keyboard Controller, showcasing its 61 full-size keys, control knobs, buttons, and touch strips.
What's in the Box
Upon unboxing your MIDIPLUS X6 III MIDI Keyboard Controller, please ensure all the following items are present:
- USB Cable
- User Manual
- MIDIPLUS X6 III MIDI Keyboard Controller
Key Features
- Full size key with velocity sensitive for expressive playing.
- Transpose & Octave Setting, Pitch & Modulation touch strip for dynamic control.
- Change mode setting with keyboard (Velocity Curve, Bank MSB/LSB, Smart Scale, Knob/ Button/ Touch Strip CC number, MIDI Channel).
- Connectivity ports: MIDI OUT, USB type-B, sustain pedal, expression pedal (pedals not included).
- System support for Windows & Mac operating systems.
- Dimensions: 947 x 193 x 87mm; Weight: 4.0kg.
Setup Guide
Follow these steps to set up your MIDIPLUS X6 III MIDI Keyboard Controller:
- Power Connection: Connect the included USB cable from the USB type-B port on the X6 III to an available USB port on your computer (Windows PC or Mac). The device is bus-powered via USB.

Image: Close-up view of the rear panel ports, including MIDI OUT, USB Type-B, Sustain (SUS), and Expression (EXP) pedal inputs.
- Driver Installation: For most modern operating systems (Windows and Mac), the X6 III is a class-compliant device and should not require additional drivers. It will be automatically recognized. If issues arise, check the official Midiplus website for specific driver information.
- Software Setup: Open your preferred Digital Audio Workstation (DAW) or music software (e.g., Avid Pro Tools). Navigate to the MIDI settings or preferences within your software. Select "MIDIPLUS X6 III" as your MIDI input device.
- Optional Pedal Connection: If you have a sustain pedal or expression pedal, connect them to the respective "SUS" (Sustain) and "EXP" (Expression) ports on the rear of the controller.
- MIDI OUT Connection: If connecting to external MIDI hardware, use a standard MIDI cable to connect the "MIDI OUT" port on the X6 III to the MIDI IN port of your external device.
Operating Instructions
Understanding the controls and functions of your X6 III will allow you to maximize its potential:
Basic Controls
- Keys: The 61 full-size, velocity-sensitive keys respond to how hard you press them, allowing for dynamic musical expression.
- Knobs (4): These four assignable knobs can control various parameters in your DAW or software instruments. Their function can be customized.
- Buttons (6): These buttons are typically used for transport control in your DAW (e.g., Play, Stop, Record, Fast Forward, Rewind, Loop).
- Octave & Transport Buttons: Dedicated buttons for shifting the keyboard's octave range up or down, and for controlling DAW transport functions.

Image: Close-up view of the X knob, Octave, and Transpose buttons on the MIDIPLUS X6 III, highlighting key control elements.
- Pitch and Modulation Touch Strips: These touch-sensitive strips allow for real-time manipulation of pitch bend and modulation effects. Slide your finger along the strip to apply the effect.

Image: Detailed view of the illuminated Pitch and Modulation touch strips on the MIDIPLUS X6 III, showing their responsive design.
- X Knob: This multi-function knob can control DAW and software instrument parameters or be used for setting various keyboard parameters.
- Display: The integrated display provides real-time feedback on control information, parameter values, and current settings.
Advanced Functions and Settings
The X6 III offers several advanced functions accessible directly from the keyboard:
- Program Change: (Default setting) Send program change messages to switch sounds or patches on connected devices or software.
- Mackie Control / HUI: Support for these industry-standard protocols allows for deep integration and control over your DAW's mixer and transport functions. Refer to your DAW's manual for specific setup instructions.
- CC Mode: Assign Continuous Controller (CC) numbers to the knobs, buttons, and touch strips for custom control mapping.
- Bank MSB/LSB Setting: Configure Bank Select Most Significant Byte (MSB) and Least Significant Byte (LSB) messages for accessing a wider range of sounds.
- Smart Scale Setting: Access 16 built-in Smart Scales, including Chinese pentatonic, Japanese scale, and Blues scale, to assist with melodic composition and improvisation.
- MIDI Channel: Adjust the MIDI channel the controller transmits on, allowing for control of specific instruments or tracks in your setup.
- Velocity Curve: Customize the keyboard's velocity response to match your playing style.
- Transpose: Shift the pitch of the entire keyboard up or down in semitone increments.
Detailed instructions for accessing and modifying these settings are typically found by pressing specific key combinations or using the X knob in conjunction with the display. Please refer to the full user manual provided with your product for precise button sequences and menu navigation.
Maintenance and Care
To ensure the longevity and optimal performance of your MIDIPLUS X6 III, follow these maintenance guidelines:
- Cleaning: Use a soft, dry, lint-free cloth to wipe down the surface of the controller. For stubborn dirt, slightly dampen the cloth with water. Avoid using abrasive cleaners, solvents, or waxes, as these can damage the finish and electronic components.
- Storage: When not in use, store the controller in a clean, dry environment away from direct sunlight, extreme temperatures, and high humidity. Protect it from dust by covering it with a cloth or a dedicated dust cover.
- Handling: Always handle the controller with care. Avoid dropping it or subjecting it to strong impacts. Do not place heavy objects on top of the keyboard.
- Connectivity: When connecting or disconnecting cables, always grasp the plug, not the cable itself, to prevent damage to the connectors and ports.
- Liquid Exposure: Keep liquids away from the controller. In case of accidental spills, immediately disconnect the power (USB cable) and allow the device to dry completely before reconnecting. If a significant amount of liquid enters the device, seek professional service.
Troubleshooting
If you encounter issues with your MIDIPLUS X6 III, try the following troubleshooting steps:
- No Power/Not Recognized by Computer:
- Ensure the USB cable is securely connected to both the controller and your computer.
- Try a different USB port on your computer.
- Try a different USB cable.
- Restart your computer.
- Check your computer's Device Manager (Windows) or System Information (Mac) to see if the device is listed.
- No Sound from Software Instrument:
- Verify that the X6 III is selected as the MIDI input device in your DAW or software instrument settings.
- Ensure the correct MIDI channel is selected on both the controller and the software instrument.
- Check that the track in your DAW is armed for recording or monitoring MIDI input.
- Confirm that the software instrument itself is loaded and has a sound selected.
- Controls (Knobs, Buttons, Strips) Not Responding:
- Check if the controls are correctly mapped within your DAW or software instrument.
- Ensure the controller is in the correct mode (e.g., CC mode for custom assignments, Mackie Control/HUI for DAW control).
- Perform a factory reset if available (refer to the full user manual for instructions on how to do this).
- Keys Not Responding or Sticking:
- Ensure no debris is lodged under the keys.
- If only certain keys are affected, it might indicate a hardware issue requiring professional service.
If these steps do not resolve your issue, please consult the comprehensive user manual or contact Midiplus customer support for further assistance.
Specifications
| Model Name | X6III |
| Brand | Midiplus |
| Number of Keyboard Keys | 61 |
| Key Type | Full size, Velocity Sensitive |
| Controls | 4 Knobs, 6 Buttons, Pitch & Modulation Touch Strips, X Knob, Octave & Transport Buttons |
| Connectivity Technology | USB |
| Hardware Interface | USB |
| Ports | MIDI OUT, USB Type-B, Sustain Pedal Input, Expression Pedal Input |
| Compatible Devices | Windows PC, Mac Computer |
| Supported Software | Avid Pro Tools (and other standard DAWs) |
| Material Type | Plastic |
| Color | White |
| Product Dimensions (L x W x H) | 947 x 193 x 87mm (37.28 x 7.6 x 3.43 inches) |
| Weight | 4.0 kg (8.8 lbs) |
Warranty and Support
For detailed information regarding the product warranty, please refer to the warranty card included with your purchase or visit the official Midiplus website. Warranty terms and conditions may vary by region and retailer.
If you require technical support, have questions about product functionality, or need assistance with troubleshooting beyond what is covered in this manual, please contact Midiplus customer support. Contact information can typically be found on the official Midiplus website or within the product packaging.
Midiplus Official Website: www.midiplus.com





