1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your MangoKit MS4 CD Player HiFi System. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your listening experience. The MS4 is a versatile audio system featuring FM radio, CD playback, Bluetooth connectivity, USB, and AUX inputs, all housed in an acoustic wood cabinet with powerful stereo sound.

Image: The MangoKit MS4 CD Player HiFi System, showcasing its metallic black finish, front display, controls, and included remote control.
2. What's in the Box
Upon unboxing your MangoKit MS4 system, please verify that all the following components are present:
- 1 x MangoKit MS4 CD Player System
- 1 x Remote Control
- 1 x Mains Power Adapter with Cable
- 1 x User Manual (this document)

Image: A visual representation of the package contents, including the MS4 unit, remote control, power adapter, and user manual, alongside product dimensions.
3. Product Features
3.1 Multi-Source Audio Playback
The MS4 offers a comprehensive range of audio playback options:
- FM Radio: Tune into your favorite FM stations with 40 preset memory slots for quick access.
- CD Player: Enjoy your CD collection with premium sound quality.
- Bluetooth Connectivity: Stream audio wirelessly from your smartphone, tablet, or other Bluetooth-enabled devices. Includes Bluetooth-out for wireless headphone connection.
- USB Playback: Play MP3 and other digital audio files directly from a USB drive.
- AUX Input: Connect external audio devices via the auxiliary input.

Image: The MangoKit MS4 unit with a CD partially inserted, demonstrating its multi-source capabilities including CD, Bluetooth, and FM radio.
3.2 Superior Audio Performance
Experience rich, clear, and powerful sound with the MS4's acoustically engineered design:
- Powerful Stereo Sound: Equipped with dual stereo speakers and rear-facing bass ports, delivering 100W output.
- Acoustic Wood Cabinet: The oak-style cabinet enhances sound resonance and clarity.
- Customizable EQ: Fine-tune your audio experience with the built-in equalizer for music or speech.

Image: An exploded view of the MangoKit MS4 highlighting its internal speaker components and the concept of powerful sound delivery.
3.3 User-Friendly Interface
The MS4 is designed for ease of use with intuitive controls and a clear display:
- 2.4" Full Color Display: Provides clear information on radio stations, music playback, and settings.
- Front Panel Controls: Easily accessible buttons and a central rotary dial for volume and navigation.
- Full Function Remote Control: Conveniently operate all features from a distance.

Image: The MangoKit MS4 system positioned on a kitchen counter, demonstrating its user-friendly interface and the included remote control.
3.4 Smart Features for Daily Use
Enhance your daily routine with integrated smart functionalities:
- Dual Alarms: Set multiple alarms with weekday and weekend modes, choosing FM radio or alarm sounds.
- Sleep Timer: Program the system to turn off automatically after a set period, ideal for falling asleep to music or radio.
- Headphone Jack: For private listening with wired headphones.

Image: The MangoKit MS4 on a bedside table, illustrating its use as a bedroom companion with alarm and sleep timer functions, and Bluetooth-out for headphones.
4. Setup Guide
4.1 Unpacking and Placement
- Carefully remove all components from the packaging.
- Place the MS4 unit on a stable, flat surface, away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the unit.
4.2 Power Connection
- Connect the provided mains power adapter to the DC IN port on the rear of the MS4 unit.
- Plug the power adapter into a standard wall outlet.
- Press the Power button on the unit or remote control to turn on the system.
4.3 Antenna Setup
For optimal FM radio reception, fully extend the telescopic antenna located at the rear of the unit. Adjust its position for the best signal quality.

Image: The rear panel of the MangoKit MS4, showing the USB port, AUX input, headphone jack, and the extended FM antenna.
5. Operating Instructions
5.1 Basic Controls
- Power Button: Turns the unit on/off.
- Volume Dial: Adjusts the master volume.
- Mode Button: Switches between FM, CD, Bluetooth, USB, and AUX modes.
- Play/Pause Button: Controls playback for CD, USB, and Bluetooth.
- Skip/Tune Buttons: Navigates tracks or tunes radio frequencies.
- Info/Menu/Back Button: Accesses menus, displays information, or goes back.
5.2 FM Radio Operation
- Press the Mode button until 'FM Radio' is displayed.
- Use the Tune +/- buttons to manually adjust the frequency or press and hold to auto-scan for the next available station.
- To save a preset: Tune to the desired station, press and hold the Preset button, select a preset number using the Tune +/- buttons, and press Enter to confirm.
- To recall a preset: Press the Preset button, then use the Tune +/- buttons to select the desired preset number.

Image: A close-up of the MangoKit MS4 display showing FM radio tuning information, indicating its premium radio capabilities.
5.3 CD Player Operation
- Press the Mode button until 'CD Player' is displayed.
- Gently insert a CD into the CD slot with the label side facing up. The system will automatically load the CD.
- Playback should begin automatically. If not, press the Play/Pause button.
- Use the Skip +/- buttons to navigate between tracks.
- Press the Stop button to stop playback.
5.4 Bluetooth Operation
- Press the Mode button until 'Bluetooth' is displayed. The system will enter pairing mode, indicated by a flashing Bluetooth icon on the display.
- On your Bluetooth-enabled device (e.g., smartphone), go to its Bluetooth settings and search for available devices.
- Select 'MangoKit MS4' from the list. Once connected, the Bluetooth icon on the MS4 display will become solid.
- You can now play audio from your device through the MS4 system. Use the MS4's controls or your device's controls for playback.
- To connect Bluetooth headphones: Ensure the MS4 is in Bluetooth mode. On the MS4, navigate to the Bluetooth-out setting (refer to the manual's detailed Bluetooth section). Put your headphones into pairing mode and select them from the MS4's display.
5.5 USB Playback
- Insert a USB flash drive into the USB port on the rear of the unit.
- Press the Mode button until 'USB Playback' is displayed.
- The system will automatically scan and begin playing compatible audio files.
- Use the Skip +/- buttons to navigate between files.
5.6 AUX Input
- Connect an external audio device (e.g., MP3 player) to the AUX IN port on the rear of the unit using a 3.5mm audio cable (not included).
- Press the Mode button until 'AUX' is displayed.
- Control playback directly from your connected external device.
5.7 Setting Alarms and Sleep Timer
Refer to the detailed instructions in the full user manual for setting dual alarms with weekday/weekend modes and configuring the sleep timer function.

Image: The MangoKit MS4 display showing dual alarm settings, highlighting its utility for scheduling wake-up times and reminders.
6. Maintenance
6.1 Cleaning the Unit
To clean the exterior of the unit, use a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents as these may damage the finish. Ensure the unit is unplugged before cleaning.
6.2 CD Care
Handle CDs by their edges to avoid fingerprints. Clean CDs with a soft, lint-free cloth, wiping from the center outwards. Do not use harsh chemicals or abrasive materials.
7. Troubleshooting
If you encounter any issues with your MangoKit MS4, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; outlet not active. | Ensure power cable is securely connected to the unit and a working wall outlet. |
| No sound | Volume too low; incorrect mode selected; headphones connected. | Increase volume; select the correct input mode (CD, FM, Bluetooth, etc.); disconnect headphones if sound is desired from speakers. |
| CD not playing | CD inserted incorrectly; CD is dirty or scratched; unsupported disc format. | Re-insert CD correctly; clean the CD; try a different CD. |
| Bluetooth not connecting | MS4 not in pairing mode; device too far; device already connected to another unit. | Ensure MS4 is in Bluetooth pairing mode; move device closer; disconnect from other Bluetooth devices. |
| Poor FM reception | Antenna not extended or positioned correctly; strong interference. | Fully extend and adjust the telescopic antenna; try moving the unit to a different location. |
If the problem persists after attempting these solutions, please contact MangoKit customer support for further assistance.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | MS4 |
| Product Dimensions (L x W x H) | 13.78" x 8.5" x 5.66" (350W x 144H x 215D mm) |
| Item Weight | 9.44 pounds |
| Connectivity Technology | Bluetooth 5.3, USB, AUX |
| Tuner Technology | FM |
| Power Source | Corded Electric |
| Display | 2.4" Full Color Display |
| Audio Output | 100W Stereo Sound |
| Radio Presets | 40 |
| Included Components | MS4 CD Player System, Remote Control, Mains Power Adapter, User Manual |
9. Warranty and Support
MangoKit is committed to providing high-quality audio products. For information regarding warranty coverage, technical support, or service inquiries, please refer to the contact details provided on the official MangoKit website or the warranty card included with your product. MangoKit has been producing audio devices since 2009, serving millions of customers worldwide.
For the most up-to-date support information, please visit: www.mangokit.com/support (Example Link)




