1. 서론
The KZ AZ09 Bluetooth Wireless Upgrade Cable transforms your wired in-ear monitors (IEMs) into wireless Bluetooth earphones. Designed for audiophiles, it features a high-fidelity (HIFI) sound experience, a comfortable ear hook design, and comes with a portable charging case. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting.
Note: The KZ AZ09 has been upgraded from Bluetooth 5.2 to Bluetooth 5.4. The charging case capacity has changed from 800mA to 400mA. New and old versions may be shipped randomly. This product does not include earphones.
Video: KZ AZ09 Product Overview 및 기능
2. 패키지 내용
- KZ AZ09 Bluetooth Ear Hooks (Left and Right)
- 충전 케이스
- 사용 설명서 (본 문서)
Note: Earphones and charging cable are NOT included.

Image: KZ AZ09 Bluetooth Ear Hooks and Charging Case
3. 사양
| 특징 | 사양 |
|---|---|
| 제품 이름 | KZ-AZ09 |
| 블루투스 버전 | 5.2 / 5.4 (Shipped randomly) |
| 블루투스 범위 | 15 미터 |
| Ear Hook Weight | 4.5g (싱글) |
| 충전 케이스 무게 | 85g |
| 이어훅 배터리 용량 | 50mA |
| 충전 케이스 배터리 용량 | 800mA / 400mA (Shipped randomly) |
| 재료 | Plastic (Skin-friendly resin) |
| 충전 방법 | 충전 케이스 |
| 오디오 코덱 | AAC |
| 마이크로폰 | 예 |
| 방수복 | 예 |
| 제어 버튼 | 예 |
| 볼륨 조절 | 예 |
| 능동 소음 제거 | 아니요 |
| APP 지원 | 아니요 |
| 보컬리즘 원리 | 다른 |
| 무선형 | 블루투스 |
| 인증 | CE |
| 기원 | 중국 본토 |

Image: Product Specifications (New Version)
4. 호환성
The KZ AZ09 is compatible with 0.75mm/0.78mm pin earphones. Please identify the corresponding pin interface (B pin or C pin) for your headphone model before purchasing.

Image: AZ09 C PIN Connector

Image: AZ09 B PIN Connector
Refer to the table below for common compatible headphone models:

Image: Compatible Headphone Models Table
5. 설정
5.1 이어훅을 이어폰에 연결하기
- Identify the correct pin type (B or C) for your earphones.
- Align the pins of the ear hook with the sockets on your earphones.
- Gently push the ear hook into the earphone until it is securely connected. Ensure a firm connection to prevent signal loss.

Image: Wired to Wireless Earphones Conversion
5.2 초기 충전
Before first use, fully charge the KZ AZ09 ear hooks and charging case. Place the ear hooks into the charging case. Connect the charging case to a power source using a USB-C charging cable (not included). The indicator light on the charging case will show charging status.
5.3 착용 지침
- Correctly distinguish the left and right ear hooks. Check the logo: "L" applies to the left ear, and "R" applies to the right ear.
- Connect the Bluetooth ear hook to your earphone.
- Put the earphone into the mouth of the ear canal, push it gently, and push it straight in the ear.
- Put the ear hook on the back of the ear and slightly rotate it to adjust the sealing and comfort of the earphone for better audio experience.

Image: Correct Wearing Instructions Diagram
5.4 블루투스 페어링
- Ensure the ear hooks are charged and powered on. They will automatically enter pairing mode when taken out of the charging case.
- 기기(스마트폰, 태블릿 등)에서 Bluetooth를 활성화하세요.
- 검색 사용 가능한 블루투스 장치.
- 목록에서 "AZ09"를 선택하여 연결하세요.
- Once connected, the ear hooks are ready for use. The dual-host dual channel transmission technology allows for faster response and individual use of each ear hook.

Image: Dual-host Dual Channel Transmission Technology Pairing
6. Basic Operation (One-Click Control)
The KZ AZ09 features intuitive one-click controls for various functions:
- 재생 / 일시 정지: 버튼을 한 번 클릭합니다.
- 이전 노래: 왼쪽 이어 후크 버튼을 두 번 클릭하세요.
- 다음 노래: 오른쪽 귀걸이 버튼을 두 번 클릭하세요.
- Start Voice Assistant (Siri): 버튼을 2초간 길게 누릅니다.
- 응답/전화 끊기: Touch the switch once during an incoming call or active call.
- Refuse to Answer Call: Long press the button on an incoming call.

Image: Basic Operation One-Click Control
7. 충전 및 배터리 수명
The Bluetooth ear hooks can be used for about 6 hours on a fully charged state. The charging case can provide 4 to 10 full charges for the ear hooks, depending on the version (400mA or 800mA capacity).
7.1 충전 표시기
- 배터리가 부족할 때: The indicator light will flash red 4 times every 30 seconds.
- 충전 시: 표시등이 빨간색입니다.
- 완전히 충전된 경우: The indicator light will be green.
Important: To ensure the service life and safety of the equipment, do not use a fast charger for charging. Use a standard 5V-1A charger.

Image: Battery Life and Charging Indicators
8. 사용자 팁
- 마이크 기능: Yes, the KZ AZ09 adapter includes a microphone for calls.
- 배터리 수명: Expect approximately 6 hours of continuous playback from the ear hooks. The charging case provides multiple recharges, extending total usage time significantly.
- 호환성 검사 : Always verify the pin type (B or C) required for your specific earphone model using the compatibility table provided in this manual or by consulting customer service.
- 요금 청구 모범 사례: Use a standard 5V-1A charger to prolong battery life and ensure safety. Avoid fast chargers.
9. 문제 해결
9.1 일반적인 문제 및 해결 방법
- 소리가 안 나거나 연결이 끊겼습니다.
- 이어훅이 완전히 충전되었는지 확인하십시오.
- Verify that the ear hooks are securely connected to your earphones.
- Check if Bluetooth is enabled on your device and if the AZ09 is paired.
- Try unpairing and re-pairing the AZ09 with your device.
- 다른 장치가 Bluetooth 연결을 방해하지 않는지 확인하세요.
- Ear Hooks Not Charging:
- 충전 케이스가 충전되었는지 확인하세요.
- Check if the ear hooks are correctly seated in the charging case.
- 충전 케이블과 전원 어댑터가 제대로 작동하는지 확인하세요.
- Clean the charging contacts on both the ear hooks and the case.
- 페어링할 수 없습니다:
- Make sure the ear hooks are in pairing mode (usually indicated by a flashing light).
- 간섭을 피하려면 근처의 다른 기기에서 Bluetooth를 끄세요.
- Try resetting the ear hooks (see section 9.2).
9.2 장치 재설정
If you experience persistent issues, a factory reset may resolve them. Please refer to the following video for instructions on how to reset your KZ AZ09:
Video: KZ AZ09 Reset Instructions
10. 유지관리 및 관리
- 청소: Use a soft, dry cloth to clean the ear hooks and charging case. Avoid using harsh chemicals or abrasive materials.
- 저장: Store the device in its charging case when not in use to protect it from dust and damage. Keep it in a cool, dry place away from direct sunlight and extreme temperatures.
- 방수 기능: The device is waterproof, but it is not recommended to submerge it in water or expose it to heavy rain for extended periods. Dry thoroughly if it gets wet.
- 충전 포트: USB-C 충전 포트를 깨끗하게 유지하고 이물질이 끼지 않도록 하십시오.
11. 안전 정보
- Do not disassemble, repair, or modify the device. This may cause fire, electronic breakdown, or complete damage to the product.
- 기기를 극한 온도, 습도 및 부식성 환경에 노출시키지 마십시오.
- Do not expose the device to open flames or dispose of it in fire.
- 어린이와 애완동물의 손이 닿지 않는 곳에 보관하세요.
- 청력 손상을 방지하기 위해 기기를 장시간 지나치게 큰 소리로 사용하지 마십시오.
- Use only recommended charging voltage (5V-1A) to prevent damage to the battery and device.
12. 보증 및 지원
보증 정보, 기술 지원 또는 서비스 문의는 판매점이나 제조업체에 직접 문의해 주세요. 보증 관련 청구를 위해 구매 증빙 자료를 보관해 주세요.





