Dimensions: 43.4 × 85.6 × 16.6 mm; aluminum alloy front cover + AG glass back cover; retro and portable.
Core Radio Configuration
Chip and Bands: Silicon Labs Si4831 professional FM chip; dual-band FM1 (87–108 MHz standard) and FM2 (76–90 MHz Japan); sensitivity ≤15 dBuV (S/N=30 dB), with strong interference resistance.
Antenna System: Built-in custom-shaped antenna + detachable 3.5mm jack telescoping antenna; headphone cable can also be used as an auxiliary antenna for a more stable signal.
Tuning and Display: Analog PVR tuning wheel with mechanical glow-in-the-dark pointer (orange backlight) for clear, ceremonial nighttime operation; supports 30-minute and 1-hour timer-based power on/off.
Audio and Output
Ultra-thin five-magnet speaker + independent dual amplifiers, equipped with the FIIO DDB analog audio chip, supporting two enhancement modes: BASS+ and 3D Sound; speaker output power ≥760mW.
Dual output modes: Stereo speaker output; 3.5mm headphone output (can be used as a headphone amplifier; pairs with a Type-C adapter cable to connect to a phone or computer as a “tail” accessory) .
Power and Battery Life
Built-in replaceable/rechargeable 450mAh 10440 lithium battery; speaker playback lasts approximately 4 hours, and headphone-only playback lasts approximately 7 hours; Type-C charging port supports on-the-go battery swapping to extend battery life.
Core Positioning and Comparison
The RR13 is an upgraded version of the Fiio RR11, primarily adding speaker functionality, optimizing the nighttime display, and incorporating a replaceable battery design. It balances retro appeal (mechanical dial + analog tuning) with modern portable audio needs, making it ideal for radio enthusiasts, outdoor portable listening, and as a retro desktop ornament.
Accessories List
Main unit, USB-C charging cable, detachable telescoping antenna;