K13 R2R vs Audio-GD NFB-11.38
The NFB-11.38's output impedance is 2Ω against the K13 R2R's 32Ω and its dsd support DSD512 against DSD256. Both share bit depth (32-bit) and max sample rate (384 kHz).
AI-generated product photo — not official manufacturer imagery.
DigitalDACsHeadphone Amplifiers
Estimated price (community-sourced)
$279 - $320
Around — community and catalog average, updates slowly
About the K13 R2R
The K13 R2R is a desktop DAC and headphone amplifier built around FiiO’s four-channel, fully differential 24-bit R2R resistor-array DAC. Its array uses 192 precision thin-film resistors, and it offers selectable NOS and OS modes. The unit supports USB decoding up to PCM 384 kHz/32-bit and DSD256, Bluetooth 5.4 reception with LDAC, AAC, and SBC, and 10-band parametric EQ. It includes balanced 4.4 mm and single-ended 6.35 mm headphone outputs, plus digital USB, coaxial, and optical inputs and analog outputs for use in a wider audio system. The amplifier is rated at up to 2,400 mW per channel into 32 ohms on its balanced output.
Specifications
Digital Audio
DAC capabilities and digital audio processing
- Bit Depth
- 32-bit
- Max Sample Rate
- 384 kHz
- DSD Support
- DSD256
- DAC Chip
- FiiO-developed four-channel fully differential 24-bit R2R array
Analog Output
Analog signal output specifications
- Output Impedance
- 32Ω
Connectivity
Input and output connections
- Bluetooth
- Yes
- Bluetooth Codecs
- SBC, AAC, LDAC
- Digital Inputs
- USB-C, coaxial, optical, Bluetooth
- Analog Outputs
- 4.4 mm balanced, 6.35 mm single-ended
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions