K13 vs SMSL DO400
The DO400's thd is 0.000% against the K13's 1.000% and its output impedance 0Ω against 0.4Ω. Both share bit depth (32-bit) and max sample rate (768 kHz).
AI-generated product photo — not official manufacturer imagery.
DigitalDACsHeadphone Amplifiers
Estimated price (community-sourced)
$320
Around — community and catalog average, updates slowly
About the K13
The FiiO K13 is a desktop DAC, headphone amplifier and preamplifier. It uses two ESS ES9039Q2M DAC chips and a fully balanced amplifier stage, with USB, optical, coaxial and Bluetooth input options. It provides 4.4 mm balanced and 6.35 mm single-ended headphone outputs, plus balanced XLR and RCA line outputs. This is the standard K13 model, not the separately named K13 R2R.
Specifications
Digital Audio
DAC capabilities and digital audio processing
- Bit Depth
- 32-bit
- Max Sample Rate
- 768 kHz
- DSD Support
- DSD512
- DAC Chip
- ESS ES9039Q2M
Analog Output
Analog signal output specifications
- THD
- 1.000%
- Output Voltage
- 4.4V RMS
- Output Impedance
- 0.4Ω
- Max Output Voltage
- 6.2V RMS
Connectivity
Input and output connections
- Bluetooth
- Yes
- Bluetooth Codecs
- LDAC
- Digital Inputs
- USB, Optical, Coaxial, Bluetooth
- Analog Outputs
- XLR, RCA
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions