Το FiiO K11 R2R ειναι desktop 24bit/384kHz DAC και ενισχυτης ακουστικων με R2R αρχιτεκτονικη. Εισοδοι: 1x Coaxial, 1x Optical, 1x USB-C. Εξοδοι: 2x RCA Line, 1x 6.3mm headphones out και 1x 4.4mm balanced headphones out.

Εγγυηση Αντιπροσωπειας. Δυνατοτητα δοσεων.

The FiiO K11 R2R is a compact yet powerful desktop DAC and headphone amplifier built around a fully differential true 24-bit R2R resistor ladder DAC, delivering a natural, analog-like sound with impressive detail and musicality. Its four-channel R2R design with precision thin-film resistors provides a cleaner background and lower distortion compared to conventional architectures, while dual OS/NOS modes let you choose between pure, non-oversampling presentation or oversampled playback up to 384kHz for maximum resolution.

A high-quality NJW1195A electronic volume control ensures precise level adjustment with low noise and low distortion, working together with three gain levels and three independent volume curves to optimize performance for everything from sensitive IEMs to demanding over-ear headphones. With up to 1300mW + 1300mW output at 32Ω from the balanced 4.4mm output, the K11 R2R is more than capable of driving a wide range of headphones with authority and control.

The specially-designed audio circuit uses a dedicated USB interface solution, FPGA processing and FIIO’s in-house R2R DAC implementation, followed by carefully tuned analog stages based on SGM8262 op-amps. A sophisticated multi-rail power supply employs low-noise regulators and high-quality Beryl solid capacitors to ensure clean, stable power delivery for consistently high sonic performance.

A custom high-contrast LCD screen provides at-a-glance information such as sampling rate, volume, gain and output mode, while the multi-function front knob allows intuitive control of power, menu navigation and output mode switching (PO/PRE/LO). The RGB-illuminated FIIO logo can indicate sampling rate and offers adjustable colors, brightness and effects, adding both functionality and visual flair. With thoughtful safety features, smart power-saving capabilities and robust build quality, the FiiO K11 R2R is an elegant and versatile centerpiece for any modern desktop audio setup.

Specifications

• General Specifications
  • Name/Model: K11 R2R
  • Hardware solution: SoC: GD32F303RE; DAC: FIIO-developed R2R DAC; USB decoding: SA9312L; AMP: SGM8262-2×2
  • Color: Black / Silver / Red / Titanium
  • Volume control: Volume knob
  • Weight: about 420 g
  • Dimensions: about 147 × 133 × 32.3 mm (including feet)
  • Gain: L / M / H
  • Adaptive impedance:
    • PO: 8–150 Ω
    • BAL: 8–350 Ω
  • Driver-free mode (switch mode): supported
  • Oversampling setting: OS / NOS
  • FiiO Control: N/A
  • Max. supported sampling rate:
    • USB DAC: up to 384 kHz / 32-bit; DSD256
    • Coaxial: up to 192 kHz / 24-bit (shown on display)
    • Optical: up to 96 kHz / 24-bit (shown on display)
  • Sampling rate indication (LOGO): default behavior
    • Cyan: 48 kHz and below
    • Yellow: above 48 kHz
    • Green: DSD
  • Firmware upgrade: supports upgrade through USB
• Buttons and Ports
  • Knob: Encoder knob (volume adjustment and menu confirmation)
  • USB port: Type-C (data transmission)
  • Single-ended line-out: RCA port
  • Digital optical in: Optical (TOSLINK) port
  • Digital coaxial in: RCA port
  • Digital coaxial out: RCA port (only works in USB mode)
  • Balanced headphone out: standard 4.4 mm port
  • Headphone out: standard 6.35 mm port
• Power Supply Parameters
  • Power supply: DC 12 V / 2 A
  • Battery capacity: no battery
• Audio Parameters – Line-out output (RCA, OS mode)
  • THD+N & Noise: about 0.025% (1 kHz / 0 dB @ 10 kΩ)
  • SNR: ≥ 115 dB (A-weighted)
  • Crosstalk: ≥ 111 dB
  • Noise floor: < 5.1 µV (A-weighted)
  • Frequency response:
    • 20 Hz–50 kHz: damping < 1.2 dB
    • 20 Hz–20 kHz: damping < 0.2 dB
  • Dynamic range: ≥ 107 dB
  • Line output level: 2.7 Vrms
• Audio Parameters – Headphone output 6.35 mm (OS mode)
  • Output power 1: L+R ≥ 660 mW + 660 mW (16 Ω, THD+N < 1%)
  • Output power 2: L+R ≥ 460 mW + 460 mW (32 Ω, THD+N < 1%)
  • Output power 3: L+R ≥ 50 mW + 50 mW (300 Ω, THD+N < 1%)
  • THD+N: about 0.025% (1 kHz / 0 dB @ 32 Ω)
  • SNR: ≥ 115 dB (A-weighted)
  • Noise floor: < 7.2 µV (A-weighted)
  • Channel crosstalk: ≥ 72 dB
  • Dynamic range: ≥ 107 dB
  • Frequency response:
    • 20 Hz–50 kHz: damping < 1.3 dB
    • 20 Hz–20 kHz: damping < 0.2 dB
  • Output impedance: < 1 Ω
  • Peak output voltage: 11 Vp-p
• Audio Parameters – Balanced headphone output 4.4 mm (OS mode)
  • Output power 1: L+R ≥ 520 mW + 520 mW (16 Ω, THD+N < 1%)
  • Output power 2: L+R ≥ 1300 mW + 1300 mW (32 Ω, THD+N < 1%)
  • Output power 3: L+R ≥ 220 mW + 220 mW (300 Ω, THD+N < 1%)
  • THD+N: about 0.025% (1 kHz / -11.6 dB @ 32 Ω)
  • SNR: ≥ 115 dB (A-weighted)
  • Noise floor: < 14.1 µV (A-weighted)
  • Channel crosstalk: ≥ 107 dB
  • Dynamic range: ≥ 107 dB
  • Frequency response:
    • 20 Hz–50 kHz: damping < 1.3 dB
    • 20 Hz–20 kHz: damping < 0.2 dB
  • Output impedance: < 1.5 Ω
  • Peak output voltage: 23 Vp-p