Introduction
Thank you for purchasing the Greadio Portable CD Player, Model CD19. This versatile device combines classic CD playback with modern connectivity options, including Bluetooth 5.3, FM radio, USB, TF card, and AUX input. Designed for both home and portable use, it features a built-in 4000mAh rechargeable battery and a convenient remote control. Please read this manual carefully to ensure proper use and optimal performance of your new CD player.
Package Contents
Please check the package contents upon unboxing:
- Portable CD Player (Model CD19) x 1
- Remote Control x 1
- Type-C Charging Cord x 1
- AUX Cable x 1
- User Manual x 1
- Pin (for reset, if applicable) x 1
Product Overview and Features

The Greadio CD Player features a compact, retro-inspired design with a translucent CD dust cover. It includes dual integrated speakers, an LED display, and intuitive controls. The package comes with a remote control for convenient operation from a distance, and a Type-C charging cable for its built-in rechargeable battery.
Key Features:
- 9-in-1 Playback Modes: Supports CD, Bluetooth (receive & transmit), FM radio, USB, TF card, AUX input, AB repeat, remote control, and optical output.
- High Compatibility: Plays CD, CD-R, CD-RW, and MP3 CDs.
- Bluetooth 5.3: Offers faster and more stable connections for both receiving audio from devices (phone, tablet, computer) and transmitting audio to Bluetooth headphones or speakers.
- Long Battery Life: Built-in 4000mAh rechargeable battery provides up to 19 hours of playback at medium volume.
- Lossless Hi-Fi Sound: Utilizes MAT and DSP digital audio technologies to minimize noise and distortion, enhancing sound quality.
- Multiple Audio Inputs/Outputs: USB port, TF card slot (supports up to 128GB), 3.5mm AUX input, 3.5mm earphone jack, and optical output for high-fidelity digital audio transmission.
- FM Radio: Built-in enhanced radio IC for improved signal reception.
Setup
1. Initial Charging

Before first use, fully charge the CD player using the provided Type-C charging cord. Connect the Type-C end to the player's charging port and the USB-A end to a compatible USB power adapter (not included) or computer USB port. The LED display will indicate charging status. A full charge typically takes 4-7 hours and provides up to 19 hours of playback depending on the mode.
2. Remote Control Setup
Insert 2 AAA batteries (not included) into the remote control. Ensure correct polarity. The remote control is essential for accessing all functions of the CD player.
3. Placement
Place the CD player on a stable, flat surface. Ensure adequate ventilation around the unit. Avoid placing it near strong magnetic fields or direct sunlight.
Operating Instructions
Power On/Off
- Press the Power button on the unit or remote control to turn the player on or off.
Mode Selection
- Press the FUNC button on the unit or remote control to cycle through available modes: CD, Bluetooth, FM, USB, TF, AUX, Optical. The LED display will indicate the current mode.
CD Playback

1. Open the CD dust cover.
2. Carefully place a CD (CD, CD-R, CD-RW, MP3 CD) onto the spindle with the label side facing up.
3. Close the CD dust cover.
4. Select CD mode using the FUNC button.
5. The player will automatically begin reading and playing the disc. Use the Play/Pause, Next/Previous Track buttons on the unit or remote for control.
CD Playback Functions:
- Single Song Loop: Repeats the current track.
- Repeat All: Repeats all tracks on the disc.
- A-B Repeat: Repeats a specific segment of a track. Press A-B button at the start point (A) and again at the end point (B) to set the loop.
Volume Control
- Adjust the volume using the dedicated volume knob on the unit or the VOL+/- buttons on the remote control.
Equalizer (EQ) Modes
- Press the EQ button on the unit or remote to cycle through preset equalizer modes: Flat, Pop, Classical, Jazz, Rock.
Connectivity
Bluetooth 5.3 (Receiving Mode)

1. Select Bluetooth mode on the CD player using the FUNC button. The LED display will show "BT" and flash, indicating pairing mode.
2. On your mobile phone, tablet, or computer, enable Bluetooth and search for "CD19".
3. Select "CD19" to pair. Once connected, the "BT" indicator will stop flashing.
4. You can now stream audio from your device to the CD player's speakers.
Bluetooth 5.3 (Transmitting Mode)

1. Ensure the CD player is in CD, USB, or TF mode.
2. Put your Bluetooth headphones, earphones, or speaker into pairing mode.
3. On the CD player's remote control, press and hold the Bluetooth button (often indicated by a Bluetooth symbol). The player will search for nearby Bluetooth devices.
4. Once connected, audio from the CD player will be transmitted to your Bluetooth audio device. Note: Bluetooth transmit function does not support connection to car audio systems. Optimal range is within 8 meters (26.24 feet).
USB / TF Card Playback

1. Insert a USB flash drive into the USB port or a TF (Micro SD) card into the TF card slot. The player supports up to 128GB.
2. Select USB or TF mode using the FUNC button.
3. The player will automatically detect and play audio files from the inserted storage device.
AUX Input

1. Connect one end of the provided 3.5mm AUX cable to the AUX port on the CD player.
2. Connect the other end to the headphone jack or audio output of an external device (e.g., mobile phone, MP3 player, computer).
3. Select AUX mode using the FUNC button. Audio from the external device will now play through the CD player's speakers.
Optical Output

1. Connect an optical fiber cable (not included) from the optical output port on the CD player to the optical input of a soundbar, amplifier, or stereo system.
2. Select Optical mode using the FUNC button. This mode is ideal for transmitting crystal-clear digital audio, especially when playing CDs.
FM Radio

1. Select FM mode using the FUNC button.
2. Use the Next/Previous Track buttons to manually tune to a station or press and hold to auto-scan for available stations.
3. For best reception, position the player near a window or adjust its orientation.
Battery and Charging

The Greadio CD Player is equipped with a 4000mAh rechargeable battery, providing extended playback time for portable use. When the battery is low, the LED display may show a low battery indicator. Connect the provided Type-C charging cable to a USB power source to recharge. The player can be used while charging.
Battery Life Estimates (at medium volume):
- CD Playback: Up to 6 hours
- FM Radio: Up to 11.5 hours
- USB Playback: Up to 12 hours
- TF Card Playback: Up to 14.5 hours
- Bluetooth Playback: Up to 19 hours
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the player. For the CD lens, use a specialized CD lens cleaner. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the player in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling CDs: Always handle CDs by their edges to avoid fingerprints and scratches. Store CDs in their cases when not in use.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Recharge the player regularly, even if not in constant use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Player does not power on. | Battery is depleted; Power cable not connected properly. | Charge the player fully; Ensure Type-C cable is securely connected. |
| CD skips or does not play. | CD is dirty or scratched; CD is inserted incorrectly; Lens is dirty. | Clean the CD; Reinsert the CD correctly; Clean the CD lens with a specialized cleaner. |
| No sound from speakers. | Volume is too low; Mute function is active; Incorrect mode selected. | Increase volume; Check if muted; Ensure correct playback mode (CD, Bluetooth, AUX, etc.) is selected. |
| Bluetooth connection issues. | Device is out of range; Player is in receiving mode when trying to transmit (or vice versa); Interference. | Move devices closer (within 8m); Ensure correct Bluetooth mode (receiving/transmitting) is active; Restart both devices. |
| FM radio reception is poor. | Weak signal; Interference. | Relocate the player to an area with better signal (e.g., near a window); Adjust player orientation. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | CD19 |
| Brand | Greadio |
| Product Dimensions (L x W x H) | 10.12 x 7.44 x 2.48 inches |
| Item Weight | 1.65 pounds |
| Battery Capacity | 4000mAh Lithium Ion (included) |
| Connectivity Technology | Bluetooth 5.3, USB, TF Card, AUX, Optical |
| Supported Disc Formats | CD, CD-R, CD-RW, MP3 CD |
| Speaker Type | Stereo |
| Color | Black |
Warranty and Support
Greadio provides free support for its products. For any questions, issues, or technical assistance, please refer to the contact information provided in your product packaging or visit the official Greadio website. Please retain your proof of purchase for warranty claims.



