Introduction
The FIFINE K669C is a high-quality XLR condenser microphone designed for professional audio recording, podcasting, streaming, vocal performances, and voice-overs. Featuring a cardioid polar pattern and a durable metal construction, it delivers clear, detailed, and balanced sound while minimizing ambient noise. This manual provides essential information for setting up, operating, and maintaining your K669C microphone to ensure optimal performance.
What's in the Box
Please check the package contents upon unboxing to ensure all items are present:
- XLR Condenser Microphone (K669C) x 1
- Tripod Stand x 1
- User's Manual x 1
Note: An XLR cable and a boom arm are NOT included and must be purchased separately if desired.

Specifications
| Feature | Specification |
|---|---|
| Model | K669C |
| Transducer Type | Condenser Microphone |
| Polar Pattern | Cardioid |
| Diaphragm Size | Built-in Dia 16mm (S-Mall) |
| Frequency Response | 30Hz - 20kHz |
| Communication | Wired (XLR) |
| Power Requirement | 48V Phantom Power |
| Use Case | Home Studio (Recording, Vocal, Voice-Over, Streaming, Podcast, Singing) |
| Style | Hanging Microphones |
| Body Material | Durable Metal with Triple Shockproof Structure |
| Mounting Thread Compatibility | 5/8'' and 3/8'' |
| Certifications | CE, FCC, KC |

Setup Instructions
Follow these steps to set up your FIFINE K669C microphone:
- Mount the Microphone:
- Attach the K669C microphone to the included tripod stand.
- Alternatively, if using a boom arm (not included), ensure it has 5/8'' or 3/8'' screw threads for compatibility. No additional adapter is required.

Microphone stand compatibility with 3/8" and 5/8" screws. - Connect the XLR Cable:
- Connect one end of an XLR cable (not included) to the XLR output port on the bottom of the K669C microphone.
- Connect the other end of the XLR cable to an audio interface, mixer, or preamplifier that supports XLR input.
- Provide Phantom Power:
- The K669C is a condenser microphone and requires 48V phantom power to operate. Ensure your audio interface or mixer has 48V phantom power enabled for the connected input channel.

Balanced XLR connection diagram, highlighting the need for 48V phantom power. - Connect to Computer/Recording Device:
- Connect your audio interface or mixer to your computer or recording device according to its instructions.
- Software Configuration:
- Select your audio interface/mixer as the input device in your operating system's sound settings and your recording software (e.g., OBS, Audacity, DAW).
Operating Instructions
To achieve the best audio quality with your K669C microphone:
- Microphone Positioning:
- The K669C has a cardioid polar pattern, meaning it is most sensitive to sound coming from the front and rejects sound from the sides and rear.
- Position the microphone directly facing the sound source (e.g., your mouth for vocals, the soundhole for an acoustic guitar).
- Experiment with distance to find the optimal balance between clarity and warmth. Generally, a few inches from the source is a good starting point.

Correct microphone positioning for optimal sound capture. - Adjust Gain Levels:
- On your audio interface or mixer, adjust the gain (input level) for the microphone channel.
- Aim for a strong signal without clipping (distortion). Most recording software will show input levels; keep them in the green/yellow range, avoiding red.
- Monitor Your Sound:
- Use headphones connected to your audio interface/mixer to monitor your sound in real-time. This helps you identify and correct any issues with positioning or gain.
- Recording/Streaming:
- Once set up, you can use the K669C for various applications such as recording vocals, instruments, podcasts, voice-overs, or live streaming.
Maintenance
Proper care will extend the life and performance of your microphone:
- Cleaning: Use a soft, dry cloth to wipe the microphone body. Avoid using liquid cleaners or solvents, as they can damage the finish or internal components.
- Storage: When not in use, store the microphone in a dry, dust-free environment. Keeping it in its original packaging or a dedicated microphone pouch can protect it from dust and physical damage.
- Handling: Although the K669C features a durable metal body and triple shockproof structure, avoid dropping or subjecting it to harsh impacts, which can affect its internal components and sound quality.

Troubleshooting
If you encounter issues with your K669C microphone, try the following solutions:
- No Sound Output:
- Check Phantom Power: Ensure 48V phantom power is enabled on your audio interface/mixer. The K669C will not function without it.
- Cable Connection: Verify that the XLR cable is securely connected to both the microphone and the audio interface/mixer. Try a different XLR cable if available.
- Input Selection: Confirm that the correct input channel is selected on your audio interface/mixer and in your computer's sound settings/recording software.
- Gain Level: Increase the gain knob on your audio interface/mixer.
- Poor Sound Quality / Excessive Noise:
- Microphone Positioning: Ensure the microphone is correctly positioned towards the sound source and not picking up excessive ambient noise from the sides or rear.
- Environment: Record in a quiet environment to minimize background noise.
- Cable Integrity: A faulty XLR cable can introduce noise. Try a different cable.
- Ground Loop: If you hear a hum, it might be a ground loop. Ensure all audio equipment is plugged into the same power strip or a properly grounded outlet.
- Vibration Noise:
- While the microphone has a triple shockproof structure, ensure it is mounted securely on a stable surface or boom arm.
- Avoid bumping the stand or desk during recording.
User Tips
- Always Use Phantom Power: Remember that the K669C is a condenser microphone and requires 48V phantom power from your audio interface or mixer to operate.
- Experiment with Placement: The ideal microphone placement can vary depending on the sound source and room acoustics. Don't hesitate to experiment with different distances and angles to find what sounds best for your specific application.
- Consider a Pop Filter: For vocal recordings, a pop filter (not included) placed between the speaker and the microphone can significantly reduce plosive sounds (harsh 'p' and 'b' sounds), leading to a smoother recording.
- Optimize Your Environment: Even with a cardioid microphone, recording in a room with minimal echo and background noise will yield the best results. Consider acoustic treatment if you frequently record in a reverberant space.
Warranty and Support
For warranty information and technical support, please refer to the official FIFINE website or contact the retailer from whom you purchased the product. Keep your proof of purchase for any warranty claims.





