Introduction
Thank you for choosing the Karaoke USA GF844 Karaoke System. This portable, all-in-one system is designed to provide hours of entertainment with its versatile media playback options and powerful audio output. Enjoy singing your favorite songs wirelessly via Bluetooth, or play from a variety of physical and digital media.
Key features include:
- 35W Peak Digital Power Amplifier (25W RMS) for clear and powerful sound.
- 7-inch TFT Digital Color Screen for displaying lyrics and video content.
- Bluetooth connectivity for wireless audio streaming.
- Compatibility with CDG, DVD, MP3G, USB Flash drives, and SD cards.
- Record Voice and Music Mix function to capture your performances.
- Digital Key Control for adjusting song pitch to match your vocal range.
- Includes two wired microphones for duets and group performances.

What's in the Box
Upon opening your Karaoke USA GF844 package, please ensure all the following components are present:
- Karaoke Machine (Main Unit)
- AC Adapter (110V/50Hz~AC 240V/60Hz, UL Approved)
- Remote Control
- AV RCA Cables
- 2 x Wired Microphones
- 2 x MP3G Karaoke Discs (300 songs total)
- Docking Cradle (for mobile devices)
- 3.5mm to RCA Audio Cable
- User Manual

Setup
Follow these steps to set up your Karaoke USA GF844 system:
- Power Connection: Connect the AC adapter to the DC IN jack on the back of the unit and plug the other end into a standard electrical outlet.
- Microphone Connection: Plug the wired microphones into the MIC 1 and MIC 2 jacks on the front of the unit.
- Audio/Video Output (Optional): To display lyrics on an external TV or monitor, connect the AV RCA cables from the unit's VIDEO OUT and AUDIO OUT jacks to the corresponding input jacks on your TV.
- External Audio Input (Optional): To play music from an external device (e.g., smartphone, tablet), connect the 3.5mm to RCA audio cable from your device's headphone jack to the AUX IN jacks on the unit.
- Power On: Press the POWER button to turn on the unit. The 7-inch TFT screen will illuminate.
Operating Instructions
Media Playback
The GF844 supports various media formats for your karaoke and entertainment needs.

Playing Discs (CDG, DVD, MP3G, Audio CD)
- Open the disc tray located below the screen.
- Carefully place your desired disc onto the tray with the label side facing up.
- Close the disc tray. The unit will automatically detect the disc type and begin playback.
- Use the PLAY/PAUSE, STOP, NEXT, and PREVIOUS buttons on the unit or remote control to manage playback.

Bluetooth Streaming
- Press the SOURCE button until "Bluetooth" mode is selected.
- On your mobile device (smartphone, tablet), enable Bluetooth and search for "Karaoke USA GF844".
- Select the unit from the list to pair. Once paired, you can stream audio wirelessly from your device.
USB Flash Drive / SD Card Playback
- Insert a USB flash drive into the USB port or an SD card into the SD card slot. Ensure no disc is in the tray for proper recognition.
- Press the SOURCE button until "USB" or "SD" mode is selected.
- Navigate through your files using the navigation buttons and select the desired song or video.
Microphone and Vocal Controls
- Microphone Volume: Adjust the MIC VOL knobs on the top panel to control the volume of each microphone.
- Echo Control: Use the ECHO knob to add an echo effect to your vocals for a more professional sound.
- Digital Key Control: Press the KEY+ or KEY- buttons to adjust the musical key of the song to better suit your vocal range. This feature is particularly useful for karaoke tracks.

Recording Your Performance
The GF844 allows you to record your singing performance directly to a connected USB flash drive or SD card.
- Ensure a USB flash drive or SD card is inserted into the corresponding slot.
- Start playing your desired karaoke track.
- Press the RECORD button. The recording indicator will light up.
- Sing into the microphone. Your voice will be mixed with the music and recorded.
- Press the RECORD button again to stop recording. Your recorded file will be saved to the USB drive or SD card.
Maintenance
To ensure the longevity and optimal performance of your Karaoke USA GF844 system, please follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. For the screen, use a screen-specific cleaning solution and a microfiber cloth. Avoid abrasive cleaners or solvents.
- Disc Care: Handle discs by their edges. Keep them clean and free of scratches. Store discs in their cases when not in use.
- Ventilation: Ensure the unit has adequate ventilation. Do not block any ventilation openings.
- Storage: When not in use for extended periods, store the unit in a cool, dry place away from direct sunlight and extreme temperatures.
- Power Off: Always power off the unit and unplug it from the power source before cleaning or when not in use for a long time.
Troubleshooting
If you encounter any issues with your Karaoke USA GF844 system, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; outlet not active. | Ensure AC adapter is securely plugged into the unit and a working power outlet. |
| No sound from speakers | Volume too low; incorrect source selected; mute activated. | Increase MASTER VOLUME. Press SOURCE button to select correct input. Check if MUTE is active. |
| No sound from microphones | Microphone volume too low; microphone not connected properly. | Increase MIC VOL knobs. Ensure microphones are fully plugged into their respective jacks. |
| Disc not playing/reading | Disc is dirty or scratched; incorrect disc type; disc inserted incorrectly. | Clean the disc. Ensure it's a compatible format (CDG, DVD, MP3G, Audio CD). Reinsert the disc correctly. |
| Bluetooth not connecting | Unit not in Bluetooth mode; device too far; device already paired. | Select Bluetooth mode on the unit. Ensure your device is within range. Unpair from other devices if necessary. |
| No video on external TV | AV cables not connected properly; TV input not selected correctly. | Check AV cable connections. Select the correct AV input on your TV. |
If the problem persists after trying these solutions, please contact customer support.
Specifications
- Model: GF844
- Brand: Karaoke USA
- Item Weight: 10.3 pounds
- Product Dimensions: 13 x 10 x 17.8 inches
- Screen Size: 7 Inches (TFT Digital Color Screen)
- Power Output: 35W Peak Digital Power Amplifier (25W RMS)
- Power Source: Plug In Electric (AC Adaptor - 110V/50Hz~AC 240V/60Hz, UL Approved)
- Connectivity: Bluetooth, USB, SD Card, RCA (Audio/Video), 3.5mm AUX
- Compatible Devices: Personal Computer, Headphone (via AUX)
- Included Components: Karaoke Machine, AC Adapter, Remote Control, AV RCA Cables, 2 Wired Microphones, 2 MP3G Karaoke Discs, Docking Cradle, 3.5mm to RCA Audio Cable, User Manual.
- Country of Origin: China
Warranty and Support
For warranty information and customer support, please refer to the official Karaoke USA website or the contact details provided in your product packaging. Keep your purchase receipt as proof of purchase for any warranty claims.
For additional assistance, you may visit the Karaoke USA Store on Amazon.
No official product videos from the seller were available for embedding in this manual.