General Specifications
Name/Model RR13 Hardware configuration 收音芯片：SI4831，模拟音频芯片：楠晟屿DDB AS100定制芯片
Color Retro gold/Black/Red/Silver Dimensions About 43.4x85.6x16.4mm
FM frequency FM1: 87~108MHz Weight About 76g
FM2: 76~90MHz Volume control Knob
Supported impedance 8~100Ω Antenna 内置定制形状天线+可拆卸3.5mm伸缩天线
Status indicator light 立体声指示灯、调谐指示灯、电量/关机定时指示灯 　 　
Buttons and Ports
Switch 频段/模式切换开关*1、输出切换开关*1、低频调节开关*1 USB port Type-C USB (charging port, analog-input)
Headphone output Standard 3.5mm port Knob 开/关机/音量调节旋钮，调谐旋钮
Built-in speakers 8Ω 1W*2 　 　
Power Supply Parameters
Power supply DC 5V ≥ 2A Charging time About 2.5H
续航时间及测试条件
Radio mode 3.5mm Headphone output: ≥7h
Audio input FM Load 32Ω
Volume level Default volume Playback track and format MP3 44.1KHz/16bit
BASS OFF 　 　
音箱输出：≥4h
Audio input FM Load 8Ω
Volume level Default volume Playback track and format MP3 44.1KHz/16bit
BASS OFF 　 　
AMP mode 3.5mm Headphone output: ≥18h 
Audio input AMP Load 32Ω
Volume level Default volume Playback track and format MP3 44.1KHz/16bit
BASS OFF 　 　
功放模式音箱输出：≥4小时
Audio input AMP Load 8Ω
Volume level Default volume Playback track and format MP3 44.1KHz/16bit
BASS OFF 　 　
FM Radio Basic Specifications
FM Radio Performance and Parameters (3.5mm output)
Output level L+R≥390mVrms+390mVrms *传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 ＜0.25%
Noise-limited sensitivity ≤15dBuV (S/N=30dB) SNR ≥45dB (A-weighted)
FM收音性能参数（扬声器输出）
Output level L+R≥75mW+75mW (8Ω, THD+N＜1%, 780mVrms) Noise-limited sensitivity ≤15dBuV (S/N=30dB)
耳放模式性能与参数（3.5mm输出）
Output power L+R≥65mW+65mW (16Ω, THD+N＜1%, 1Vrms) Output impedance ＜1Ω
L+R≥80mW+80mW (32Ω, THD+N＜1%, 1.6Vrms) Crosstalk ≥68dB
L+R≥10mW +10mW (300Ω, THD+N＜1%, 1.8Vrms） Input sensitivity 2.5V
*传统振膜通常依赖特定粘合剂将音圈粘合在振膜表面，这不仅增加振膜整体重量，还可能导致动圈运动时的动态失衡。局部重量分布不均会引起振动异常、改变振膜顺性，甚至因音圈擦圈而产生失真，最终影响单元整体表现。 ＜0.008% (1kHz/-0dBV@32Ω) SNR ≥100dB (A-weighted)
Frequency response 20Hz~95kHz: attenuation＜3dB Noise floor ＜10uV（A计权）
20Hz~20KHz: attenuation＜0.1dB Dynamic range ≥93dB (A-weighted)
Peak output voltage 4.5Vpp 　 　
耳放模式性能与参数（音箱输出）
Output power L+R≥75mW+75mW (8Ω, THD+N＜1%, 780mVrms) Frequency response 65Hz~20KHz