Product profile · DAC / headphone amplifier / preamplifier
FiiO K13 R2R
A desktop R2R DAC, headphone amplifier and RCA preamplifier with USB, optical, coaxial and Bluetooth inputs.
Best for
Where it fits
- 300-ohm headphones through its verified balanced output
- USB DAC to powered speakers
- Listeners specifically seeking selectable R2R modes
- Desktop 4.4 mm and 6.35 mm headphone use
Avoid if
Where it does not fit
- Balanced XLR line output is required
- A network streamer is required
- Headphone matching must be decided without sensitivity or target-level data
Verified product record
Interfaces and capabilities
Recorded capabilities
Bluetooth receiver
Recorded connections
- Input: Coaxial S/PDIF
- Input: Optical S/PDIF
- Input: USB audio
- Output: 4.4 mm balanced headphone
- Output: 6.35 mm headphone
- Output: RCA line
| Headphone output power | at least 150 mW/channel300ohm · source ↗ |
|---|
Key limitationThe stored 300-ohm single-ended rating is 150 mW per channel; final headphone suitability still depends on sensitivity, output used and target level.
Change tracking
Firmware and evidence status
Current in the 10 August 2026 evidence snapshot. Recheck firmware release notes when a protocol, app workflow or restart behaviour is decision-critical.
Open the official product source ↗
Last source review: 10 August 2026. An omitted feature means “not recorded here”, not automatically “unsupported”.
Connected decisions
Related scenarios and articles
Browse explainersCheck compatibility relationsTrack firmware
Member knowledge · editor reviewed
Questions, owner experience and product issues
Join the live member discussion below, or submit structured experience and issue reports for editorial review.
Loading reviewed community records…