FiiO K11 R2R Desktop DAC and Headphone Amplifier
Fully Differential 24-bit R2R DAC
Dual Audio Modes
True 24-bit Decoding
Advanced Audio Circuitry
Robust Power System
Intuitive Control & Display
Comprehensive Safety Features
Fully Differential 24-bit R2R DAC
Engineered with precision, the K11 RAR features a self-developed, four-channel fully differential 24-bit R2R DAC using dual 48-precision thin-film resistor arrays per channel—totaling 192 resistors with 0.1% tolerance and minimal temperature drift. This design guarantees a uniquely charming sound signature that elevates your audio experience.
Superior Noise Performance
Utilizing a fully differential architecture, the K11 RAR dramatically reduces noise and minimizes unwanted FFT harmonics compared to typical designs. This results in a darker, purer musical background that lets every nuance of your audio come through with exceptional clarity.
Versatile Sound Modes
The K11 RAR offers dual NOS (Non-Oversampling) and OS (Oversampling) modes to suit your listening preferences. NOS mode preserves the original sampling rate for an authentic, organic sound, while OS mode upsamples to a high 384kHz rate for refined, crystal-clear audio performance.
True 24-bit Decoding
With support for PCM 384kHz/24bit and DSD256 decoding (with DSD256 converted via Native mode), this DAC effortlessly handles high-precision audio signals. Every subtle detail in your music is faithfully reproduced, delivering an outstanding and immersive listening experience.
Technical Details
Colors: Black, Silver
Dimensions: 147 x 133 x 32.3 mm (including feet)
Weight:Approximately 420 g
Main Control Chip: GD32F303RET6 (single-chip microcomputer)
DAC: Fully differential true 24-bit R2R resistor arrays
Volume Control Chip: NJW1195A
USB Input: 384kHz/32bit, DSD256
Coaxial Input: 192kHz/24bit
Optical Input: 96kHz/24bit
USB Connector:Type-C
Display: Custom LCD screen
Power Supply: DC12V 2A external adapter
SE Power Output 1: L+R ≥ 460mW + 460mW (32Ω, THD+N <1%) [32Ω/single-ended/high gain]
SE Power Output 2: L+R ≥ 50mW + 50mW (300Ω, THD+N <1%) [300Ω/single-ended/high gain]
BAL Power Output 1:L+R ≥ 1300mW + 1300mW (32Ω, THD+N <1%) [32Ω/balanced/high gain]
BAL Power Output 2: L+R ≥ 220mW + 220mW (300Ω, THD+N <1%) [300Ω/balanced/high gain]
Frequency Response: 20 Hz ~ 50 kHz (attenuation <1.3 dB)
SNR: ≥115 dB (A-weighted)
Noise Floor: PO < 7.2 μV (A-weighted); BAL < 14.1 μV (A-weighted)
Output Impedance: PO < 1Ω (32Ω load); BAL < 1.5Ω (32Ω load)
THD+N: LO < 0.02% (1kHz/10kΩ)
Inside the Box
1x K11 R2R
1x Power adapter
1x Power cable
1x USB data cable
1x Headphone adapter
1x Quick start guide
1x Warranty card
