FiiO RR11 (Silver)

Specification
Model: RR11
Color: Titanium Gold/Black/Red/Silver
Size: Approximately 83.2mm x 39.4mm x 13mm
Weight: Approximately 46g
Radio chip: Si4831
FM: FM1:87~108MHZ; FM2:76~90MHz; FM3:64~87MHZ
Adaptive impedance: 8~100 Ω
Battery: 300mAh lithium battery
Power supply: Supports DC5V/>1A
Charging time: about 2 hours

Radio mode
Output amplitude: L+R>4mV+4mV
THD+N:<0.3%
Signal to Noise Ratio:> 45dB (A-weighted)
Noise limit sensitivity:< 15dBuV(S/N=30dB)
Battery life:>8.5 hours (40mV output, 32 Ω load)

Ear amplifier mode
Output power 1: L+R>30mW+30mW(16Q，THD+N<1%)
Output power 2: L+R>40mW+40mW(32Q，THD+N<1%)
Output impedance:< 1Q
THD+N:<0.04%(1kHz/ -24dB@32 Ω)
Signal to Noise Ratio:> 100dB (A-weighted)
Bottom noise:< 10uV (A-weighted)
Battery life:>17.5 hours (40mV output, 32 Ω load)