The Fiio E11 is a high-performance portable headphone amplifier with a built-in high-performance power processor and power amplifier, which can be connected to various audio players and mobile phones to process and amplify their audio signals; the output can drive various headphones. It plays a role in improving power and improving sound quality.
The Fiio E11 is a compact, battery‑powered earphone power amplifier with a built‑in high‑performance lithium battery and three‑channel amplification. The manual introduces the device’s controls, including the power/volume knob, gain switch, EQ selector and charging indicator, and describes how to connect audio sources and headphones.
Detailed sections cover battery installation, charging procedures, important safety warnings, warranty terms, and a full list of technical specifications such as frequency response, signal‑to‑noise ratio, output power and dimensions. The guide also provides troubleshooting tips and contact information for support. This manual is written in Chinese.
| Power adapter | DC 5V, 500mA |
|---|---|
| Frequency response | 10~100 kHz |
| Signal‑to‑noise ratio | ≥98 dB |
| Crosstalk attenuation | 60 dB |
| Gain (high) | ≥12 dB |
| Total harmonic distortion | <0.009% (10 mW) |
| Maximum output power (high gain) | 300 mW (16 Ω), 200 mW (32 Ω), 35 mW (300 Ω) |
| Maximum output power (low gain) | 120 mW (16 Ω), 88 mW (32 Ω), 13 mW (300 Ω) |
| Battery charging time | 200 minutes (PC USB) |
| Battery playback duration | >10 hours |
| Recommended headphone impedance | 16~300 Ω |
| Input impedance | >5 kΩ |
| Dimensions | 92.5 mm × 54.2 mm × 13.4 mm |
| Weight (including battery) | 65 g |
Rotate the power/volume knob clockwise to turn on the device and increase volume; rotate counter‑clockwise to decrease volume and continue to the end to power off.
Connect the MINI‑USB port to a standard 5 V/500 mA charger or PC; the red charging LED lights while charging and turns off when charging is finished.