1. Introduction
Thank you for choosing the Fanmusic TRUTHEAR x Crinacle Zero Earphone. This manual provides essential information for the proper setup, operation, and maintenance of your new in-ear monitors. Please read this guide thoroughly to ensure optimal performance and longevity of your device.

Image: Front view of the Fanmusic TRUTHEAR x Crinacle Zero Earphones.
2. Product Features
- Dual Dynamic Driver Configuration: The ZERO earphone features a dual dynamic driver setup, including a 10mm driver for low frequencies and a 7.8mm driver for mid-high frequencies, ensuring a balanced and detailed sound reproduction.
- Glue-Dropping Molding Capping Process: The earphone's cavity utilizes a sandwich structure (front cavity, decorative panel, and glue dropping capping). This process, solidified by ultraviolet light and finished with hand-polishing and varnish spraying, ensures both aesthetic appeal and structural integrity.
- Excellent Objective Indicators: Designed with a proper low-frequency gain and high-frequency response aligned with HRTF characteristics, the ZERO offers objective performance comparable to professional monitor earphones, providing a natural and atmospheric timbre.
- Accurate Hybrid Double Frequency Division: Leveraging high-precision DLP-3D printing technology, the acoustic nozzle structure and accurately calculated RC frequency division ensure precise performance from the hybrid dual dynamic drivers.
- New Generation DLP 3D Printing Technology: The earphone cavity is manufactured using medical-grade high-transparency resin and an internal coloring process, ensuring printing accuracy, efficiency, and a lightweight, skin-friendly, and reliable build.
- High-Quality Detachable Cable: Equipped with a four-strand, high-quality silver-plated cable and a universal 0.78 2Pin interface, allowing for cable replacement and expanded possibilities.

Image: Close-up of the TRUTHEAR x Crinacle Zero earphone, highlighting its design and detachable cable interface.
3. Package Contents
Verify that all items are present in the package:
- TRUTHEAR x Crinacle Zero In-Ear Earphones (1 pair)
- 0.78 2Pin Detachable Cable (1)
- Various sizes of silicone ear tips (6 pairs)
- User Manual (this document)
4. Setup
4.1. Attaching the Cable
- Identify the left (L) and right (R) earphone units and the corresponding connectors on the cable. The cable connectors are typically marked with 'L' and 'R'.
- Align the 2-pin connector on the cable with the socket on the earphone unit. Ensure the pins are correctly oriented.
- Gently push the connector straight into the earphone socket until it is firmly seated. Do not force the connection.
- Repeat for the other earphone unit.

Image: TRUTHEAR x Crinacle Zero earphone with its detachable 2-pin cable connected.
4.2. Selecting and Installing Ear Tips
Proper ear tip selection is crucial for sound quality and comfort.
- Experiment with the included silicone ear tips of different sizes.
- Choose a size that creates a snug seal in your ear canal without causing discomfort. A good seal is essential for optimal bass response and noise isolation.
- To install, gently push the ear tip onto the earphone nozzle until it is securely attached.
4.3. Wearing the Earphones
- Insert the earphone units into your ears, ensuring the cable loops over the top of your ears for a secure fit.
- Adjust the earphones until they feel comfortable and form a good seal.
5. Operating Instructions
5.1. Connecting to an Audio Source
Plug the 3.5mm jack of the earphone cable into your audio device (e.g., smartphone, digital audio player, computer). Ensure the connection is secure.
5.2. Volume Control
Adjust the volume using your audio source device. Start with a low volume and gradually increase it to a comfortable listening level. Prolonged listening at high volumes can cause hearing damage.
5.3. Disconnecting the Cable
When disconnecting the cable from the earphones, grasp the connector firmly and pull it straight out. Do not pull on the cable itself to avoid damage.
6. Maintenance
6.1. Cleaning the Earphones and Ear Tips
- Regularly clean the ear tips with a soft, damp cloth. For deeper cleaning, remove the ear tips and wash them with mild soap and water, then allow them to dry completely before reattaching.
- Gently wipe the earphone bodies and nozzles with a dry, soft cloth to remove any earwax or debris. Avoid using harsh chemicals or abrasive materials.
- Ensure the earphone nozzles are clear of obstructions. A small brush or pick can be used carefully if needed.
6.2. Cable Care
- Avoid sharp bends or excessive pulling on the cable.
- When storing, coil the cable loosely to prevent tangling and damage.
6.3. Storage
Store your earphones in a clean, dry place, preferably in a protective case, when not in use. This helps prevent dust accumulation and physical damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or low volume |
|
|
| Distorted sound |
|
|
| Uncomfortable fit |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Fanmusic |
| Model Name | TRUTHEAR x Crinacle Zero |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Impedance | 10 ohm |
| Connectivity Technology | Wired |
| Headphone Jack | 3.5 mm Jack |
| Audio Driver Type | Dual Dynamic Driver |
| Audio Driver Size | 10mm (low frequency), 7.8mm (mid-high frequency) |
| Frequency Range | 20Hz-39500Hz |
| Cable Length | 2 feet |
| Enclosure Material | Polyurethane (PU) |
| Compatible Devices | Cellphones, Desktops, Laptops |
9. Official Product Video Guide
Video: Official overview of the Fanmusic TRUTHEAR Zero Earphones, demonstrating key features and design. (Duration: 1:32)
10. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or contact Fanmusic customer service directly. Keep your proof of purchase for any warranty claims.