Introduction
The FiiO FA19 is a high-fidelity in-ear monitor designed for audiophiles, featuring a ten-unit balanced armature acoustic architecture. It delivers exceptional clarity, transparency, and powerful low-frequency performance, making it suitable for both critical listening and audio production. This manual provides detailed instructions for the proper use, maintenance, and troubleshooting of your FA19 in-ear monitors.
Key Features
- Ten-Unit Balanced Armature Design: Utilizes a sophisticated acoustic architecture for precise sound reproduction across the frequency spectrum.
- Custom Knowles Enhanced Bass BA Drivers: Specifically designed low-frequency drivers in collaboration with Knowles for robust and impactful bass.
- Rubycon Audiophile-Grade Crossover Capacitors: Imported from Japan, these capacitors ensure accurate crossover points and improved high-frequency resolution with an accuracy error as low as 0.1%.
- "Monitor/HiFi" Mode Switch: Allows users to switch between a clean, detailed "Monitor" sound profile ideal for audio production and a more energetic "HiFi" mode with enhanced mids and bass for pleasant listening.
- 8-Strand 224-Wire Pure Silver Cable: Comes standard with a high-purity pure silver cable for excellent conductivity, detail retrieval, and vivid sound.
- Negative Feedback Bass Enhancement System: Ensures adequate venting of the earphone's front cavity, preventing discomfort and improving soundstage.
- Mid-Frequency Notch Filter: Enhances mids, eliminates sibilance, and refines treble by precisely filtering the 8kHz peak and shifting crossover points.
What's in the Box
Your FiiO FA19 package includes the following components:
- FiiO FA19 In-Ear Monitors
- Pure Silver Detachable MMCX Headphone Cable
- Various Eartips (Foam, Bass, Balanced, pinFit, HS18) in different sizes (S/M/L)
- Swappable Audio Plugs (3.5mm and 4.4mm pre-installed)
- Cleaning Brush
- MMCX Quick Release Tool
- HB5 Case
- Quick Start Guide
- Magnetic Cord Clip

Setup
- Choose Eartips: Select the eartips that provide the best seal and comfort for your ears. Experiment with different types (foam, bass, balanced, pinFit, HS18) and sizes (S, M, L) to find the optimal fit. A good seal is crucial for sound quality, especially bass response.
- Attach Cable: The FA19 uses MMCX connectors. Carefully align the cable connectors with the earphone sockets. Push firmly until you hear a click, indicating a secure connection. Ensure the left (L) and right (R) indicators on the cable match the respective earpieces.
- Select Audio Plug: The cable comes with swappable audio plugs (3.5mm and 4.4mm). Choose the plug compatible with your audio source device. To swap, gently pull the current plug off the cable's end and push the desired plug into place.
- Connect to Audio Source: Insert the selected audio plug into the headphone jack of your audio player, smartphone, or amplifier.
- Wearing the IEMs: Gently insert the earpieces into your ear canals. The cable is designed to loop over the top of your ear for a secure and comfortable fit. Adjust the cable and earpiece until they feel snug and stable.

Operating Instructions
"Monitor/HiFi" Mode Switch
The FiiO FA19 features a physical switch on the earpiece that allows you to toggle between two distinct sound profiles:
- Monitor Mode: This mode delivers a clean, detailed, and neutral sound, particularly in the treble frequencies. It is optimized for audio production, mixing, and critical listening where accuracy is paramount.
- HiFi Mode: This mode adds energy to the mids and bass, with a special emphasis on bass impact and quantity. It provides a more engaging and pleasant listening experience for general music enjoyment.
To switch modes, locate the small toggle switch on the side of each earpiece and slide it to your desired setting. Ensure both earpieces are set to the same mode for balanced sound.

Volume Control
Adjust the volume directly from your audio source device. Start with a low volume and gradually increase it to a comfortable listening level to prevent hearing damage.
Maintenance
- Cleaning Earpieces: Regularly clean the earpieces and eartips to prevent wax buildup and maintain hygiene. Use the provided cleaning brush to gently remove debris from the nozzle and eartips. For the earpieces, wipe with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Cleaning Cable: The pure silver cable can be wiped with a soft, dry cloth. Avoid excessive bending or twisting of the cable to prolong its lifespan.
- Storage: When not in use, store your FA19 in the provided HB5 carrying case to protect them from dust, moisture, and physical damage.
- Avoid Moisture: The FA19 is not water-resistant. Avoid exposing the earphones to water, sweat, or high humidity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound or sound from only one side |
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| Poor sound quality (e.g., weak bass, distorted sound) |
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| Discomfort when wearing |
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Specifications
| Feature | Detail |
|---|---|
| Model Name | FA19 |
| Audio Driver Type | Balanced Armature Driver (10 units) |
| Connectivity Technology | Wired |
| Headphones Jack | 2.5 mm / 3.5 mm / 4.4 mm (swappable plugs) |
| Impedance | 10 Ohm |
| Frequency Range | 20 Hz - 20,000 Hz |
| Cable Feature | Detachable, 8-strand 224 wires pure silver cable |
| Control Method | Remote (via source device) / Mode Switch on IEM |
| Item Weight | 0.65 Kilograms (approx. 1.43 pounds) |
| Water Resistance Level | Not Water Resistant |
| Manufacturer | FiiO |
| Package Dimensions | 8.66 x 5.51 x 2.76 inches |
Warranty and Support
For warranty information and technical support, please refer to the official FiiO website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.
Official FiiO Website: www.fiio.com





