Product Description
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
Technical Specifications
- 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)
What's Included
- K11 R2R
- Power adapter (including AC cable)
- USB A to C cable
- 6.35mm adapter
- Quick start guide
- Warranty card
