1. Introduction
The JODIO K3 Wireless Karaoke Headphones and Microphone Bundle provides a complete solution for portable karaoke. This system includes Bluetooth 5.4 over-ear headphones, a wireless handheld microphone, and a premium travel case. It features patented AI Vocal Removal technology, Duet Mode, and controls for echo and key adjustment, offering a versatile karaoke experience.

Image: The JODIO K3 system is designed for portability, allowing users to enjoy karaoke anywhere.
2. What's in the Box
Verify that all components are present in your JODIO K3 package:
- Bluetooth Wireless Headphones
- Wireless Microphone
- Travel Bag
- 3-in-1 Charging Cable
3. Setup
3.1 Charging the Devices
Before initial use, fully charge both the headphones and the microphone using the provided 3-in-1 charging cable. Connect the cable to a standard USB power adapter (not included).
- Headphones: A red indicator light will show during charging and turn off when fully charged.
- Microphone: A charging indicator will illuminate and change color or turn off when charging is complete.
3.2 Pairing Headphones with a Device
- Ensure the headphones are charged and powered off.
- Press and hold the Power button on the headphones until the indicator light flashes blue and red, indicating pairing mode.
- On your audio source device (smartphone, tablet, etc.), enable Bluetooth and search for "JODIO K3".
- Select "JODIO K3" from the list of available devices to connect. A voice prompt will confirm successful pairing.
3.3 Pairing Microphone with Headphones
The microphone and headphones are designed to pair automatically when both are powered on and in close proximity. If they do not connect automatically:
- Ensure both the headphones and microphone are powered on.
- If the microphone has A/B channels, ensure they are set to the same channel as the headphones (refer to microphone specific instructions if applicable).
- If connection issues persist, power cycle both devices and try again.
4. Operation
4.1 Basic Controls
- Power On/Off: Press and hold the Power button on headphones/microphone.
- Volume Adjustment: Use the volume buttons (+/-) on the headphones.
- Play/Pause: Press the Multi-function button on the headphones.
- Next/Previous Track: Double-press or triple-press the Multi-function button (functionality may vary by device).
4.2 AI Vocal Removal (Karaoke Mode)
The JODIO K3 features patented AI Vocal Removal technology to convert any song into an instrumental track for karaoke. This function operates directly on the hardware without requiring external apps or subscriptions.
- Ensure your headphones are connected to your audio source and playing music.
- Press the dedicated AI Vocal Removal button on the headphones or microphone.
- The vocals will be removed in real-time, leaving the instrumental track. Press the button again to restore vocals.

Image: AI Vocal Removal allows you to convert any song into an instrumental track for karaoke.
4.3 Private Karaoke Experience
Enjoy karaoke without disturbing others. Your voice from the microphone and the music will be heard through the headphones only.

Image: Sing anytime without disturbing others, ideal for shared living spaces or late-night practice.
4.4 Duet Mode
Connect two JODIO K3 headphone sets for synchronized duets or shared listening experiences.
- Ensure both JODIO K3 headphone sets are powered on and not connected to any device.
- Activate TWS (True Wireless Stereo) pairing on both headphone sets (refer to specific instructions for TWS activation, usually a double-press on a specific button).
- Once the two headphone sets are linked, pair one of them to your smartphone or audio source via Bluetooth. Both headphones will now play synchronized audio.

Image: Duet Mode allows two users to sing together or share audio from a single source.
4.5 Echo & Key Control
Adjust vocal effects directly from the headphones or microphone:
- Echo Control: Use the dedicated Echo button on the microphone to cycle through different echo levels or turn it off.
- Key Adjustment: Use the Key Up/Down buttons on the microphone to adjust the vocal key of the music to match your range.
4.6 Recording & Streaming
The JODIO K3 system is compatible with recording and streaming applications.
- Connect your headphones to your smartphone or computer via Bluetooth.
- Open your preferred recording app (e.g., voice recorder, GarageBand) or streaming platform (e.g., TikTok, Twitch, OBS).
- Ensure the JODIO K3 is selected as the audio input/output device within the app settings.
- Begin recording or streaming your performance.

Image: The JODIO K3 is ready for recording performances or live streaming on various platforms.
4.7 Shared Listening (Non-Karaoke)
Beyond karaoke, the Duet Mode functionality allows two users to share music or movies privately from a single source.
- Follow the steps for Duet Mode (Section 4.4) to link two JODIO K3 headphone sets.
- Play your desired audio or video content from the connected device.
- Both users will hear the synchronized audio through their respective headphones.

Image: Share music or movies with another person in quiet environments like airplanes or libraries.
5. Maintenance
5.1 Cleaning
- Wipe the headphones and microphone with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Avoid getting moisture into any openings.
5.2 Storage
- Store the JODIO K3 system in its premium travel case when not in use to protect it from dust and damage.
- Keep the devices in a cool, dry place, away from direct sunlight and extreme temperatures.
5.3 Battery Care
- To prolong battery life, avoid fully discharging the batteries frequently.
- Charge the devices regularly, even if not used for extended periods (e.g., once every 3 months).
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Low battery | Charge the headphones/microphone fully. |
| Headphones not pairing | Not in pairing mode; device Bluetooth off; too far from device | Ensure headphones are in pairing mode (flashing blue/red). Turn on Bluetooth on your device. Move devices closer. |
| Microphone not connecting to headphones | Microphone/headphones off; channel mismatch (if applicable) | Ensure both devices are on. Check microphone channel settings. Power cycle both devices. |
| No sound from headphones | Volume too low; not connected; incorrect audio output selected | Increase volume. Re-pair devices. Check audio output settings on your source device. |
| Vocal removal not working | Feature not activated | Press the AI Vocal Removal button on the headphones or microphone. |
| Echo/Key control not responding | Not in Karaoke Mode; incorrect button press | Ensure microphone is connected and in Karaoke Mode. Refer to specific button functions. |
7. Specifications
- Model Name: K3
- Model Number: HJWK1000-AB3
- Connectivity Technology: Bluetooth
- Wireless Communication Technology: Bluetooth 5.4
- Included Components: Bluetooth wireless headphone, Wireless microphone, Travel Bag, 3-in-1 charging cable
- Material: Plastic
- Specific Uses For Product: Travel, Music, Sport, Karaoke
- Control Method: Touch
- Audio Driver Type: Dynamic Driver
- Earpiece Shape: Over-ear
- Special Features: AI-Vocal Removal, Duet mode, Echo Effect
- Power Source: Battery Powered
- Item Weight: 962 g
- Package Dimensions: 30.91 x 25.7 x 7.29 cm
8. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official JODIO website. Keep your proof of purchase for warranty claims.