Fiio K11 R2R Desktop DAC and Headphone amplifier

• Fully differential true 24Bit R2R DAC Resistor Arrays
• NOS/OS dual modes
• High-quality electronic volume control NJW1195A
• 1300mW+1300mW high output power
• 3 gain levels, 3 volume curves
• Specially-designed audio circuit
• Specially-designed power supply
• High-quality Beryl solid capacitors
• Custom LCD screen
• RGB logo lighting

FULLY DIFFERENTIAL - TRUE 24BIT R2R DAC RESISTOR ARRAYS

FIIO’s newly self-developed four-channel fully differential 24bit R2R DAC consists of 2x 48 precision thin-film resistor arrays per channel, totalling 192 resistors with 0.1% tolerance and low temperature drift (30ppm). This configuration delivers a unique and charming sound.

COMPARISON BETWEEN FULLY DIFFERENTIAL AND TYPICAL ARCHITECTURES

The K11 R2R employs a fully differential architecture, resulting in lower noise, with less FFT harmonics and a darker music background compared to typical ones.

DUAL NOS/OS MODES - DOUBLE THE FUN

NOS (Non-Oversampling) Mode: Maintains the original sampling rate for decoding, preserving authentic sound and allowing you to enjoy an organic and captivating musical experience.

OS (Oversampling) Mode: Upsamples globally to a high sampling rate of 384kHz, for superior audio performance and even more refined, clear sound.

TRUE · 24BIT DECODING - EXCELLENT CAPABILITIES, OUTSTANDING SOUND QUALITY

Support for PCM 384kHz/24bit and DSD256 decoding, means the K11 R2R can easily handle high-precision audio signals and fully exhibit the details within, providing you with an excellent audio experience.

* DSD256 requires setting the DSD output mode to Native on the source device, internally converting to PCM before being decoded by the R2R resistor arrays.

NJW1195A HIGH-QUALITY ELECTRONIC VOLUME CONTROL

The NJW1195A is a 4-channel electronic volume controller. This resistor ladder electronic potentiometer is low distortion and low noise, allowing precise volume adjustment.

3 GAIN LEVELS

3 INDEPENDENT VOLUME CURVES

The 3 independent gain levels and volume curves allow the K11 R2R to give you a better listening experience with various types of headphones, whether you are using sensitive earphones or harder-to-drive over-ear headphones.

• H: High gain volume curve
• M: Medium gain volume curve
• L: Low gain volume curve

Supplied in the box

• K11 R2R x 1
• Power adapter x 1
• Power cable x 1
• USB data cable x 1
• Headphone adapter x 1

BASIC SPECIFICATIONS

• Colours: Black, Silver, Red (planned for later production)
• Main control chip (single-chip microcomputer): GD32F303RET6
• DAC: Fully differential true 24bit R2R resistor arrays
• Volume control chip: NJW1195A
• USB input decoding: 384kHz/32bit, DSD256
• Coaxial input decoding: 192kHz/24bit
• Optical input decoding: 96kHz/24bit
• USB connector: Type-C
• Display: Custom LCD screen
• Dimensions: 147x133x32.3mm (including feet)
• Weight: About 420g
• 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: 20Hz~50kHz: attenuation＜1.3dB
• SNR: ≥115dB (A-weighted)
• Noise floor: PO＜7.2uV (A-weighted); BAL＜14.1uV (A-weighted)
• Output impedance: PO＜1Ω (32Ω load); BAL＜1.5Ω (32Ω load)
• THD+N: LO＜0.02% (1kHz/10kΩ)