erjigo KZ DQS Dynamic Driver In-Ear Headphones Instruction Manual

1. Introduction and Overview

The erjigo KZ DQS In-Ear Headphones are designed to deliver high-fidelity audio with a focus on powerful bass and clear sound reproduction. Featuring a self-developed dynamic driver and a semi-open ear shell design, these headphones offer a comfortable and immersive listening experience.

Key Features:

• KZ Self-Developed Dynamic Driver: Features a precise 0.15MM magnetic gap for high efficiency and low distortion, surpassing conventional dynamic drivers.
• High Precision Four-Layer Sound Coil: Utilizes a copper clad aluminum four-layer voice coil for improved bass and high-frequency performance, offering excellent conductivity and lightweight design.
• Semi-Open Ear Shell Design: Effectively suppresses sound wave refraction within the cavity, enhancing bass depth and power.
• KZ Team Tuning: Thousands of fine-tuning adjustments ensure smooth connection between treble, mid, and bass frequencies, providing balanced audio for various music styles.
• Detachable 0.75mm 2-Pin OFC Cable: Made of high-purity oxygen-free copper wire for excellent electrical conductivity and reduced signal loss. Gold-plated pins increase longevity.
• Classic Ergonomic Design: Comfortably fits the human ear for stable wear and extended listening sessions.

2. What's in the Box

• KZ DQS In-Ear Headphones (with attached cable)
• Additional Ear Tips (various sizes)

3. Setup

3.1 Attaching the Cable

The KZ DQS headphones feature a detachable 0.75mm 2-pin cable. To attach the cable:

1. Identify the left (L) and right (R) earpieces and the corresponding connectors on the cable.
2. Align the 2-pin connector on the cable with the receptacle on the earpiece.
3. Gently push the connector straight into the earpiece until it clicks securely into place. Do not force it.
4. Repeat for the other earpiece.

Figure 1: Illustration of the pluggable gold-plated 2-pin connection design, showing how to securely attach the cable to the earbud.

3.2 Wearing the Headphones

The KZ DQS headphones are designed for an ergonomic ear-wrap fit:

1. Select the appropriate ear tip size for a comfortable and secure seal.
2. Place the earpiece into your ear canal.
3. Gently wrap the cable over and around the top of your ear. The cable is designed to conform to the shape of your ear for stability.
4. Adjust the earpiece and cable until you achieve a comfortable and snug fit. A good seal is crucial for optimal sound quality and bass response.

Figure 2: A user demonstrating the classic ergonomic design of the KZ DQS headphones, worn with the cable wrapped over the ear for a stable and comfortable fit.

4. Operating Instructions

The KZ DQS headphones with microphone feature a multi-function wire-control for easy management of calls and music playback.

Figure 3: Detailed diagram of the multi-function wire-control, allowing users to switch between calls and music without removing the earphone. Functions include Play/Pause, Answer/Hang Up (short press), Decline a call (long press), Next song (press twice), and Last song (press 3 times).

4.1 Music Playback Control:

• Short Press: Play/Pause music.
• Press Twice: Skip to the next song.
• Press 3 Times: Go back to the previous song.

4.2 Call Management:

• Short Press: Answer an incoming call or hang up an active call.
• Long Press: Decline an incoming call.

5. Product Features

5.1 Advanced Dynamic Driver Technology

The KZ DQS features a self-developed dynamic driver with a magnetic gap of approximately 0.15MM. This reduced distance between the voice coil and magnet significantly improves efficiency and reduces distortion, resulting in superior sound quality compared to standard dynamic drivers.

Figure 4: An exploded diagram illustrating the internal components of the KZ DQS earbud, emphasizing the self-developed dynamic driver with its 0.15MM magnetic gap, lightweight metal cover, 3D inner bracket, skin-friendly resin cavity, silicone ear tip, metal mesh, metal nozzle, and sound filter.

5.2 High-Precision Four-Layer Sound Coil

To enhance bass performance, the KZ DQS utilizes a copper clad aluminum four-layer voice coil, similar to those found in professional speakers. This design significantly improves both bass and high-frequency response, offering the conductivity of copper with a lighter weight.

Figure 5: A detailed view of the high-precision four-layer voice coil, illustrating its construction with copper clad aluminum for enhanced low-frequency performance.

5.3 Semi-Open Ear Shell Design

The semi-open design of the ear shells effectively reduces sound wave refraction within the cavity. This design contributes to a deeper, more powerful bass response and an overall clearer sound profile.

Figure 6: A visual representation of the semi-open exhaust design on the KZ DQS face cover, which helps to inhibit sound wave reflection and improve bass quality.

5.4 Professional Tuning for HiFi Sound

The KZ DQS headphones have undergone extensive fine-tuning by the KZ acoustic team. Each frequency band is carefully debugged to ensure a smooth connection between treble, mid, and bass, providing a balanced sound suitable for a wide variety of music genres including jazz, pop, and blues.

Figure 7: Frequency response graph showing the balanced tuning achieved by the KZ acoustic team, ensuring smooth transitions between high, medium, and low frequencies for a real HiFi experience.

5.5 Official Product Video

6. Specifications

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your KZ DQS headphones.

• Cleaning: Regularly clean the ear tips with a soft, dry cloth. For deeper cleaning, remove the silicone ear tips and wash them with mild soap and water, ensuring they are completely dry before reattaching.
• Cable Care: Avoid sharp bends or excessive pulling on the cable. When storing, coil the cable loosely.
• Storage: Store your headphones in a clean, dry place away from extreme temperatures and direct sunlight.
• Avoid Moisture: These headphones are not water-resistant. Keep them away from liquids and high humidity.

8. Troubleshooting

If you encounter any issues with your KZ DQS headphones, refer to the following common troubleshooting steps:

• No Sound:
  • Ensure the 3.5mm jack is fully inserted into your audio device.
  • Check the volume level on your audio device and the headphone's wire-control.
  • Verify the cable is securely connected to both earpieces.
  • Test with another audio device to rule out device-specific issues.
• Poor Sound Quality (Distortion, Low Bass):
  • Ensure the ear tips form a tight seal in your ear canal. Try different sized ear tips.
  • Check the audio source for quality issues.
  • Inspect the cable and connectors for any damage.
• Microphone Not Working:
  • Ensure the 3.5mm jack is fully inserted. Some devices may require a specific jack type for microphone functionality.
  • Check your device's audio settings to ensure the correct microphone input is selected.
• Earbuds Falling Out:
  • Experiment with different ear tip sizes to find the most secure fit.
  • Ensure the ear-wrap design is correctly positioned over your ears.

9. Warranty and Support

The erjigo KZ DQS Dynamic Driver In-Ear Headphones come with a 1-year manufacturer warranty. For warranty claims or technical support, please contact the seller or manufacturer directly.

Return Policy: This product is eligible for a refund/replacement within 30 days of purchase, subject to the retailer's return policy.