| General Specifications |
| Name/Model |
RR11 |
Hardware solution |
SoC: MS430, FM radio: SI4831, analog sound effect and amp: FIIO DDB AS100 custom chip |
| Color |
Titanium gold/Black/Red/Silver |
Dimensions |
About 83.2x39.4x13mm |
| Frequency Modulation (FM) |
FM1: 87~108MHz |
Weight |
About 46g |
| FM2: 76~90MHz |
Volume control |
Volume knob |
| FM3: 64~87MHz |
Adaptive impedance |
8~100Ω |
| Status indicator |
Stereo indicator, frequency pointer, radio indicator, battery level indicator |
Antenna |
Earphones JF1 work as an antenna |
| Buttons and Ports |
| Slide switch |
FM slide switch*1, Mode slide switch*1, Sound effect slide switch*1 |
USB port |
Type-C USB (charging port, analog input) |
| Headphone output |
Standard 3.5mm port |
Knob |
Power on/off/Volume knob, FM knob |
| Power Supply Parameters |
| Power supply |
DC 5V/≥1A |
Charging time |
About 2h |
| Battery Life and Test Conditions |
| FM mode 3.5mm headphone out: ≥8.5h |
| Audio input |
FM |
Load |
32Ω |
| Volume level |
40mV out |
Play track and format |
MP3 44.1kHz/16bit |
| AMP mode 3.5mmheadphone out: ≥17.5h |
| Audio input |
AMP |
Load |
32Ω |
| Volume level |
40mV out |
Play track and format |
MP3 44.1kHz/16bit |
| Basic Parameters |
| Performance and parameters of FM mode |
| Output amplitude |
L+R≥4mV+4mV |
THD+N |
＜0.3% |
| Noise-limited sensitivity |
≤15dBuV (S/N=30dB ) |
SNR |
≥45dB (A-weighted) |
| Performance and parameters of AMP mode (3.5mm out) |
| Output power |
L+R≥30mW+30mW (16Ω, THD+N＜1%) |
Output impedance |
＜1Ω |
| L+R≥40mW+40mW (32Ω, THD+N＜1%) |
Crosstalk |
≥65dB |
| L+R≥5mW +5mW (300Ω, THD+N＜1%) |
Output amplitude |
1.1Vrms |
| THD+N |
＜0.04% (1kHz/-24dB@32Ω) |
SNR |
≥100dB (A-weighted) |
| Frequency response |
20Hz~95kHz: attenuation＜3dB |
Noise floor |
＜10uV (A-weighted) |
| 20Hz~20kHz: attenuation＜0.1dB |
Peak output voltage |
3Vpp |
| Input sensitivity |
0.9V |
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