1. Introduction
This manual provides essential information for the safe and effective use of your Korg microARRANGER 61-Key Keyboard Production Station. Please read this manual thoroughly before operating the instrument to ensure proper setup, operation, and maintenance. Retain this manual for future reference.
2. Safety Precautions
- Power Supply: Use only the specified AC adapter. Ensure the voltage matches the requirements of your region. Disconnect the power cord during lightning storms or when unused for long periods.
- Location: Avoid placing the instrument in direct sunlight, near heat sources, or in areas with excessive dust, moisture, or vibration. Ensure adequate ventilation.
- Handling: Do not place heavy objects on the instrument. Avoid spilling liquids into the unit. Do not attempt to disassemble or modify the instrument. Refer all servicing to qualified personnel.
- Cleaning: Use a soft, dry cloth for cleaning. Do not use abrasive cleaners, waxes, or solvents.
3. Setup
3.1 Unpacking
Carefully remove the microARRANGER from its packaging. Verify that all accessories, including the AC adapter and music stand, are present. Keep the original packaging for potential future transport or storage.
3.2 Power Connection
Connect the supplied AC adapter to the DC IN jack on the rear panel of the microARRANGER. Plug the AC adapter into a suitable wall outlet. The instrument is designed to operate with its dedicated AC adapter.
3.3 Audio Connections
The microARRANGER features built-in stereo speakers for immediate sound output. For private practice, connect standard 3.5mm stereo headphones to the PHONES jack on the rear panel. For connecting to an external amplifier, mixer, or PA system, use the OUTPUT L/MONO, R jacks. A LINE INPUT (mini plug) is also available for connecting external audio sources.

Figure 3.1: Rear panel of the Korg microARRANGER, illustrating the power input, audio output jacks (L/MONO, R), line input, headphone jack, MIDI IN/OUT ports, and SD card slot. This view is crucial for understanding connectivity options.
3.4 SD Card Insertion
The microARRANGER utilizes an SD card slot for data storage, including user styles, songs, and system updates. Insert the SD card into the designated slot on the rear panel until it clicks into place. Ensure the card is inserted correctly to avoid damage.
3.5 MIDI Connections
The instrument is equipped with standard MIDI IN and MIDI OUT ports, allowing connection to other MIDI-compatible devices such as computers (via a MIDI interface), sequencers, or sound modules. These ports facilitate the exchange of musical performance data.
4. Operating Instructions
4.1 Powering On/Off
To power on the microARRANGER, press the POWER button located on the top panel. The display will illuminate, and the system will initialize. To power off, press and hold the POWER button until the unit shuts down.
4.2 Basic Navigation
The microARRANGER features a central LCD display and various buttons and a data entry dial for navigation and parameter adjustment. Use the MODE buttons to select different operational modes (e.g., Style Play, Song Play, Sound). The data entry dial allows for quick value changes, while cursor buttons navigate menus.

Figure 4.1: An angled perspective of the Korg microARRANGER, showcasing its 61-key mini keyboard, integrated control panel with LCD screen, and built-in speakers. This view provides an overall impression of the instrument's layout.
4.3 Sound Selection
The microARRANGER offers a wide variety of instrument sounds. In Sound mode, use the category buttons and data entry dial to browse and select desired sounds, ranging from pianos and organs to strings, brass, and synthesizers.
4.4 Style Selection and Usage
The core of the microARRANGER is its auto-accompaniment feature. Select a style from the 304 available options. Each style provides a complete musical environment with drums, bass, guitar, and other instruments. Play chords with your left hand in the accompaniment zone, and the microARRANGER will generate a full backing track. Use the START/STOP button to begin/end the style, and FILL IN buttons for transitions.

Figure 4.2: Overhead view of the Korg microARRANGER, positioned on a reflective dark surface. The image includes sheet music and a writing instrument, suggesting its use in musical composition and practice. This perspective highlights the compact design and full control panel.
4.5 Effect Processing
The instrument includes 4 stereo effect processors with 89 effect programs. These can be applied to individual sounds or the overall output to enhance the musical performance. Refer to the detailed parameter guide in the full manual for specific effect adjustments.
4.6 Volume Control
Adjust the overall volume using the dedicated VOLUME knob. Ensure the volume is set to a comfortable listening level before playing.
4.7 Recording and Sequencing
The microARRANGER allows for recording your performances as MIDI data to the SD card. This feature is useful for capturing musical ideas and can be transferred to a computer for further editing. Consult the detailed manual for sequencer operation.

Figure 4.3: A close-up shot of hands actively playing the Korg microARRANGER. The image emphasizes the Natural Touch mini keyboard and the responsiveness of the keys, along with a portion of the control panel, illustrating user interaction with the instrument.
5. Features Overview
- Compact Design: A portable and compact composing/performing keyboard that functions as a musical arranger.
- Keyboard: Features a 61-key Natural Touch mini keyboard with velocity sensing for expressive playing.
- Audio Output: Equipped with a built-in stereo speaker system for convenient sound reproduction.
- Effects: Includes 4 Stereo Effect Processors offering 89 distinct effect programs to enhance sounds.
- Styles: Provides 304 pre-programmed styles, each serving as a complete and interactive musical environment for creative inspiration and performance.

Figure 5.1: A direct front view of the Korg microARRANGER, displaying its full width and the arrangement of the 61 mini keys. This image provides a clear perspective of the keyboard's compact size and overall aesthetic.
6. Maintenance
- Cleaning: Regularly wipe the surface of the instrument with a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and a mild detergent, then wipe dry immediately.
- Storage: When not in use, store the microARRANGER in a clean, dry place away from extreme temperatures and humidity. If storing for an extended period, disconnect the AC adapter.
- Transportation: When transporting the instrument, use appropriate protective casing to prevent physical damage.
7. Troubleshooting
7.1 No Power
- Ensure the AC adapter is securely connected to both the instrument and a working power outlet.
- Verify that the power outlet is active by testing it with another device.
7.2 No Sound
- Check the main volume knob and ensure it is turned up.
- If using headphones, ensure they are fully plugged in and functioning correctly.
- If connected to an external audio system, verify the connections and the volume settings on the external device.
- Ensure a sound is selected and not set to a silent patch.
7.3 Keys Not Responding
- Restart the instrument.
- Ensure the keyboard is not in a mode that disables key input (e.g., certain setup menus).
For issues not covered here, please refer to the comprehensive user manual or contact Korg customer support.
8. Specifications
| Feature | Description |
|---|---|
| Model Name | MAR1 |
| Number of Keys | 61 Natural Touch mini keys, Velocity sensing |
| Dimensions (LxWxH) | 87.3 x 9.09 x 27.71 cm (34.37 x 3.58 x 10.91 inches) |
| Item Weight | 4.2 kg (9.26 lbs) |
| Connectivity | MIDI In/Out, Headphones (3.5mm Jack), Line Input (mini plug), Output (standard plug) |
| Speakers | Built-in stereo speaker system |
| Effects | 4 Stereo Effect Processors with 89 effect programs |
| Styles | 304 Styles |
| Power Supply | AC Adapter (DC 12V) |
| Color | Black |
9. Warranty and Support
For warranty information, product registration, and technical support, please visit the official Korg website or contact your local Korg distributor. Keep your purchase receipt as proof of purchase for warranty claims.
Korg Official Website: www.korg.com





