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| FiiO RR11 Portable Stereo Radio Specifications | |
| General | |
| Model Name | RR11 |
| Color Options | Titanium gold / Black / Red / Silver |
| Dimensions | About 83.2 x 39.4 x 13mm |
| Weight | About 46g |
| Hardware Solution | SoC: MS430, FM radio: SI4831, Analog sound effect & amp: FiiO DDB AS100 custom chip |
| FM Frequency Bands | FM1: 87~108MHz, FM2: 76~90MHz, FM3: 64~87MHz |
| Volume Control | Volume knob |
| Adaptive Impedance | 8~100Ω |
| Status Indicators | Stereo, Frequency pointer, Radio, Battery level |
| Antenna | Earphones JF1 work as antenna |
| Button and Ports | |
| Slide Switches | FM switch x1, Mode switch x1, Sound effect switch x1 |
| USB Port | Type-C (charging port, analog input) |
| Headphone Output | Standard 3.5mm port |
| Knobs | Power on/off & Volume, FM tuning knob |
| Power Supply | DC 5V / ≥1A |
| Charging Time | About 2 hours |
| Battery Life (FM Mode) | ≥8.5h (32Ω load, 40mV out, MP3 44.1kHz/16bit) |
| Battery Life (AMP Mode) | ≥17.5h (32Ω load, 40mV out, MP3 44.1kHz/16bit) |
| Basic Parameters | FM Mode Output Amplitude | L+R ≥ 4mV + 4mV |
| FM Mode THD+N | < 0.3% |
| FM Sensitivity | ≤15dBuV (S/N = 30dB) |
| FM Mode SNR | ≥45dB (A-weighted) |
| AMP Output Power |
30mW + 30mW (16Ω) 40mW + 40mW (32Ω) 5mW + 5mW (300Ω) |
| AMP Output Impedance | < 1Ω |
| Crosstalk | ≥65dB |
| Output Amplitude | 1.1Vrms |
| AMP THD+N | < 0.04% (1kHz / -24dB @ 32Ω) |
| AMP SNR | ≥100dB (A-weighted) |
| Frequency Response | 20Hz–95kHz (<3dB), 20Hz–20kHz (<0.1dB) |
| Noise Floor | <10uV (A-weighted) |
| Peak Output Voltage | 3Vpp |
| Input Sensitivity | 0.9V |