Features
- True 24-Bit R2R DAC – Fully differential four-channel design with 192 precision resistors ensures rich, natural, and musical sound with lower noise and distortion.
- Dual NOS/OS Modes – Choose between Non-Oversampling for authentic, organic sound or Oversampling up to 384kHz for cleaner, more detailed playback.
- Preamplifier & Power Amplifier – Functions as a versatile desktop hub with PCM 384kHz/24bit and DSD256 decoding for high-resolution audio.
- 10-Band PEQ Equalizer – Precision sound customization via FIIO Control app or web interface, with presets, headphone correction, and curve sharing.
- Fully Balanced Amplifier Circuit – Differential signal processing across the audio chain for minimal distortion, dynamic range, and pop-noise protection.
- Advanced Power Supply Design – Built-in 30W AC supply with external DC input, multi-rail regulation, and ELNA RA3 audiophile capacitors for stable, clean power.
- High Output Power – 2400mW + 2400mW balanced output drives demanding headphones and IEMs with ease.
- HD LCD Display – High-contrast, long-lasting screen shows sampling rate, volume, gain, and output mode at a glance.
- Premium Build & Design – Unibody aluminum chassis with “skylight” RGB lighting blends minimalism with a modern tech aesthetic.
- High-Resolution Bluetooth – Bluetooth 5.4 with LDAC, AAC, and SBC codec support for wireless HiFi listening.
- Adaptive & Safe Operation – Three gain levels, volume curves, overheating/overload protection, customizable RGB lighting, and a timer shutdown function.
Included in the box
- K13 R2R
- AC power cord
- Infrared remote control
- USB data cable
- Headphone adapter
- Quick start guide
- Warranty card
Specifications
Color: Black, Silver
Main control chip (MCU): ESP32-S3
USB chip: XMOS XU316
DAC: Fully differential true 24Bit R2R DAC resistor arrays
Volume control chip: NJW1195AV
R2R and LPF op-amp: OPA1642*4
LO buffer op-amp: LTA8092*2
Headphone amplifier: OPA1642*2+TPA6120A *2
USB input: 384kHz/32bit, DSD256
Coaxial input: 192kHz/24bit, DSD64
Optical input: 96kHz/24bit
USB connector: Dual Type-C
Display: Custom LCD
Power input: AC 100-240V 50/60Hz; DC 12V/2.5A
Dimensions: About 210x188x42mm (including feet)
Weight: About 980g
Single-ended power output 1: L+R≥1220mW +1220mW (32Ω, THD+N＜1%) (32Ω/SE/high gain)
Single-ended power output 2: L+R≥150mW+150mW (300Ω, THD+N＜1%) (300Ω/SE/high gain)
Balanced power output 1: L+R≥2400mW+2400mW (32Ω, THD+N＜1%) (32Ω/balanced/high gain)
Balanced power output 2: L+R≥600mW+600mW (300Ω, THD+N＜1%) (300Ω/balanced/high gain)
Frequency response: 20Hz~80kHz: Attenuation＜2.9dB
SNR: ≥116dB (A-weighted)
Noise floor: PO＜9uV (A-weighted); BAL＜18uV (A-weighted)
Output impedance: PO＜0.7Ω (32Ω load); BAL＜1Ω (32Ω load)
THD+N: About 0.0173% (1kHz/-6dB@32Ω)