Rediscover your local stations

KEXP. KCRW. WFMU. The FiiO RR13 is a handheld FM radio that lets you connect to great radio stations in your city. A Silicon Labs Si4831 radio chip handles two FM bands, while a five-magnet speaker and headphone connectivity give you two ways to listen. BASS and 3D sound effects, a luminous mechanical dial, and a rechargeable, swappable battery round out a pocket-sized radio built for everyday use.

Two FM bands

The Silicon Labs Si4831 FM radio chip handles station reception across the standard 87–108MHz band and Japan’s 76–90MHz band. Turn the tuning control to find local news, music, and conversation, with reception supported by a custom internal antenna.

Speaker mode 

An ultra-thin five-magnet speaker and dual independent amplifiers fit inside the RR13’s compact chassis. Listen through the built-in speaker while working around the house or connect headphones while out and about.

Detachable antenna

The RR13 includes a detachable telescopic antenna with a 3.5mm connection. Extend it when reception needs a boost. Connected headphones can also help improve reception sensitivity, giving you additional options when the internal antenna needs support.

Bass boost and sound effects

FIIO’s custom DDB AS100 analog audio and amplifier chip provides BASS and 3D sound effects. Use them to add low-end emphasis and a greater sense of space to your listening.

Smooth mechanical tuning

The RR13 refines the analog tuning mechanism used in the RR11 with a new roller, gear, and rack structure. The revised gear ratio makes adjustments smoother and more precise, helping you settle on a station with a controlled turn of the dial.

Rechargeable and replaceable battery

The rechargeable 450mAh battery provides approximately seven hours of radio listening through headphones or four hours through the speaker at the default volume. Charging takes about two hours through USB-C. The battery is swappable, so a compatible spare can extend your listening time.

The RR13 uses a custom 10440 lithium battery with an integrated protection board and a non-standard 44mm length. Contact FIIO customer support for a compatible replacement. Actual battery life varies with listening conditions.

Headphone amplification mode

Connect a compatible source through a digital-to-analog audio adapter cable to use the RR13 as a headphone amplifier. This mode also lets you apply its DDB analog sound effects to music and internet radio from an external device. FIIO’s TRUST series Type-C to Type-C digital-to-analog audio cable is available separately.

In headphone amplifier mode, the RR13 delivers at least 80mW per channel into 32Ω, with an output impedance below 1Ω. Headphone battery life extends to at least 18 hours in this mode.

Perfect for your pocket or purse

An aluminum alloy front panel and AG glass back cover give the RR13 a solid feel in the hand. It weighs approximately 2.68 oz (76g) and measures about 1.71 × 3.37 × 0.65 inches (43.4 × 85.6 × 16.4mm). Choose from retro gold, black, red, or silver.

Product highlights

• Silicon Labs Si4831 FM radio chip
  
• Standard 87–108MHz and Japan 76–90MHz FM bands
  
• Ultra-thin five-magnet speaker with dual independent amplifiers
  
• Headphone connectivity for private listening
  
• Custom FIIO DDB AS100 analog audio chip with BASS and 3D sound effects
  
• Analog tuning with a revised roller, gear, and rack mechanism
  
• Luminous mechanical frequency dial
  
• Custom internal antenna and included detachable telescopic antenna
  
• Rechargeable, swappable 450mAh battery
  
• USB-C charging
  
• Headphone amplifier mode with a compatible adapter cable, sold separately
  
• 30- or 60-minute sleep timer
  
• Aluminum alloy front panel and AG glass back cover

Specs

• General
  
  • Model: FIIO RR13
    
  • Colors: Retro gold, black, red, silver
    
  • Dimensions: Approximately 1.71 × 3.37 × 0.65 inches (43.4 × 85.6 × 16.4mm)
    
  • Weight: Approximately 2.68 oz (76g)
    
  • Radio chip: Silicon Labs Si4831
    
  • Analog audio chip: Custom FIIO DDB AS100
    
  • FM1 frequency range: 87–108MHz
    
  • FM2 frequency range: 76–90MHz
    
  • Supported headphone impedance: 8–100Ω
    
  • Battery: Custom rechargeable, swappable 450mAh 10440 lithium battery with protection board
    
  • Battery length: Non-standard 1.73 inches (44mm)
    
  • Charging input: USB-C, 5V DC / 2A
    
  • Charging time: Approximately 2 hours
• Radio mode
  
  • Headphone output voltage: ≥390mVrms per channel
    
  • Speaker output power: ≥760mW per channel into 8Ω at 2.45Vrms
    
  • THD+N: <0.25%
    
  • SNR: ≥45dB, A-weighted
    
  • Noise-limited sensitivity: ≤15dBμV at 30dB S/N
    
  • Headphone battery life: ≥7 hours
    
  • Speaker battery life: ≥4 hours
    
  • Battery test conditions: Default volume, FIIO laboratory testing
• Headphone amplifier mode
  
  • Headphone output power into 16Ω: ≥65mW per channel, THD+N <1%, 1Vrms
    
  • Headphone output power into 32Ω: ≥80mW per channel, THD+N <1%, 1.6Vrms
    
  • Speaker output power into 8Ω: ≥75mW per channel, THD+N <1%, 780mVrms
    
  • Output impedance: <1Ω
    
  • THD+N: <0.008% at 1kHz, 0dBV into 32Ω
    
  • SNR: ≥100dB, A-weighted
    
  • Noise floor: <10μV, A-weighted
    
  • Headphone battery life: ≥18 hours
    
  • Speaker battery life: ≥4 hours

What’s included

• FIIO RR13 radio
  
• USB charging cable
  
• External telescopic antenna
  
• Quick start guide
  
• Warranty card