FiiO A1 Portable Headphone Amp
Model Name/Number | A1 | Color Available | Silver |
| Weight | 20g (incl. belt clip) | Dimensions | 42mm x 40.7mm x 9.4mm |
| Audio Input | Standard 3.5mm Port | Headphone Output | Standard 3.5mm Port |
| Drive Ability | 16~100 Ω (recommended) | Power Input | DC 5V/0.8~1A (recommended) |
| Battery Capacity | 160 mAh | Battery Life | ≥13 h (32Ω loaded) |
| Output Power | ≥78mW（16Ω / THD+N＜1%) | Charging Time | ≤90 mins |
| THD+N | <0.05% (1kHz) | Output Impedance | ≤ 0.2 Ω |
| Frequency Response | 10 Hz~90 kHz（-3dB，Input: 300mV） | SNR | ≥100dB (A-weighted) |
| Input Sensitivity | 1.05Vrms（Vol=Max） | MAX input Level | 1.35Vrms |
| Crosstalk | ≥65 dB | Channel Imbalance | ≤ 0.2dB |
| Gain | 3.65dB | Status LED | Yes |
| MAX Output Voltage | 4.52Vp-p | MAX Output Current | 50mA |
| EQ Modes | Bass1: 2.7dB bass boost Bass2: 5.2dB bass boost Bass3: 5.2dB bass reduction | MCU | MSP430 |
| Headphone AMP | TPA6130A2 | Sound Effects Module | 74HC4052PW＋OPA2322AID |
Frequency Response diagram of curves.
Test condition: Load=33 ohms, Vol=Max, Headphone ouptut.
Red curve: Left channel Blue curve: Right channel