FiiO K11 R2R

New version of the FiiO K11 with R2R DAC
€148,74 €174,99 €148,74 per 
Desktop Amplifier/DAC with 24-bit R2R DAC.
Details

0FiiO K11 R2R, new ways of listening

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The FiiO K11 R2R is the update of the successful K11 desktop amplifier/DAC with anew DAC structure and resistor array with 24-bit R2R chiptotally differentiating on the market. 

It also incorporates dual NOS/OS modes and high-quality electronic volume control, all to offer power figures of 1300mW + 1300mWand three levels of gain. 

With each component designed in detail to obtain maximum performance, the FiiO K11 R2R lands with new ways to listen to your music without interruptions. Find out! 

1The big news: 24-bit R2R DAC

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The new 24-bit R2R four-channel fully differential DAC developed by FiiO, consists of two sets of maximum precision thin film resistors. 

At a total of 192 resistors and a tolerance of 0.1% and low temperature deviation, it results in a unique and charming device.

Its totally differential architecture results in lower noise and a full musical background, compared to other current DAC/AMPs.

2Dual modes

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The FiiO K11 R2R has two modes of use: NOS mode and OS mode.

  • NOS Mode: Maintains the original sample rate for decoding, preserving authentic sound and allowing you to enjoy an organic and captivating music experience.
  • OS Mode: Performs global oversampling at a high sample rate of 384kHz, for superior audio performance and refined sound.

324-bit decoding and electronic controller

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Support for 384kHz/24-bit PCM and DSD256 decoding means the K11 R2R can handle high-precision audio signals and display the details inside. 

In turn, the NJW1195A is a four-channel electronic volume controller. The electronic resistor ladder potentiometer has low distortion and low noise, for a premium experience.

4Three gain levels and volume curves

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Thethree independent gain levels and volume curvesallow the K11 R2R to give you a better listening experience with different types of headphones, whether they are more sensitive IEMs or over-ear demanding to move.

5Specially designed audio circuit

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The audio signal is transmitted through a USB interface processor to a digital audio bridge. After being processed by an FPGA, it is sent to the R2R DAC for 4-channel output after decoding. From there and through its two TI IOPA1642 op:amps, the volume is adjusted. 

Its gain controls and all internal components are activated to protect your headphones, and of course, achieve a unique sound.

6High quality solid capacitors

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The ultra-low ESR of the capacitors, combined with excellent anti-interference capabilities, allows it to provide a stable and clean power supply for high-quality sound.

71300mW output power

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With a 32 Ohms load, the K11 R2R is capable of generating up to 1300mW + 1300mW in balanced mode. This allows you to easily handle premium headphones and unleash their full potential.

8Custom LCD screen and RGB light

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A durable, high-contrast custom LCD display lets you easily see sample rate, volume, gain, or output mode at a glance.

Additionally, the RGB-illuminated FiiO logo provides a quick way to identify the sample rate of the audio currently playing. Six LED strips work in conjunction with carefully placed reflective film and body parts designed to reflect light to make the light show uniform and elegant.

9Multi-function volume knob

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Themultifunction volume knob of the K11 R2R is used to turn the device on and off, to operate the menu, to adjust the volume and other functions. It is specially designed to perform multiple functions just by pressing and guiding it. You can also switch between modes and adapt your K11 R2R to different audio settings.

10A secure device

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For greater stability, reliable connection and durability of the device, security systems are used through components designed to improve heat dissipation and protect the entire assembly with an exclusive phosphor copper metal shielding.

It also has DC protection and new energy saving system.

11What's in the box?

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  • 1 x FiiO K11 R2R
  • 1 x Power Adapter
  • 1 x Power Cable
  • 1 x USB Data Cable
  • 1 x Headphone Adapter
  • 1 x Quick Start Guide
  • 1 x Warranty Card
Do you have questions about this or other products in our catalogue? Contact us
Specifications

0General specifications

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  • Name/Model: K11 R2R    
  • Hardware Solution:
  • SoC: GD32F303RE
  • DAC: R2R DAC developed by FIIO
  • USB Decoding: SA9312L, AMP: SGM8262-2*2
  • Volume control: pvolume knob
  • Weight: Approximately 420 g    
  • Dimensions: 147 x 133 x 32.3 mm (feet included)
  • Gain: Low/Medium/High    
  • Adaptive impedance:
  • Power: 8 ~ 150Ω
  • Balance: 8~350Ω
  • Maximum supported sample rate: 384 kHz-32 bit/DSD256 (USB analog-to-digital converter)

1Connection specifications

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  • Encoder knob (includes volume adjustment and menu confirmation)    
  • USB: Type C (data transmission)
  • Single-ended line output: RCA port    
  • Digital optical input: poptical port
  • Digital coaxial input: pRCA port    
  • Digital coaxial output: RCA port (only works in USB mode)
  • Balanced: standard 4.4mm port    
  • Headphone output: pstandard 6.35 mm port
  • Power supply: DC 12V/2A

2Line output specifications (RCA, OS mode)

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  • THD+N: Approximately 0.025% (1 kHz/0 dB at 10 KΩ)
  • Crosstalk: ≥111dB
  • Frequency response:
  • 20 Hz ~ 50 kHz: attenuation <1.2 dB
  • 20 Hz ~ 20 KHz: attenuation <0.2 dB
  • Signal-to-noise ratio: ≥115dB (A-weighted)
  • Noise level:<5.1 uV (A-weighted)
  • Dynamic range: ≥107dB
  • Line output level: 2.7 Vrms

3Headphone output specifications (6.35mm, OS mode)

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  • Potencia de salida: 
    • L+R≥660mW +660mW(16Ω,THD+N<1%)
    • L+R≥460mW +460mW(32Ω,THD+N<1%)
    • L+R≥50mW+50mW (300Ω, distorsión armónica total+ruido <1%
  • Diafonía de canales: ≥72dB
  • Respuesta en frecuencia: 
    • 20 Hz ~ 50 kHz: amortiguación <1,3 dB
    • 20 Hz ~ 20 KHz: atenuación <0,2 dB
  • Distorsión armónica total (THD) + ruido: Aproximadamente 0,025 % (1 kHz/0 dB a 32 Ω)
  • Relación señal/ruido: ≥115dB (ponderado A)
  • Nivel de ruido:<7,2 uV (ponderado A)
  • Gama dinámica: ≥107dB
  • Impedancia de salida:<1Ω
  • Voltaje de salida pico: 11Vp-p

4Headphone output specifications (4.4mm, OS mode)

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  • Potencia de salida: 
    • L+R≥660mW +660mW(16Ω,THD+N<1%)
    • L+R≥460mW +460mW(32Ω,THD+N<1%)
    • L+R≥50mW+50mW (300Ω, distorsión armónica total+ruido <1%
  • Diafonía de canales: ≥72dB
  • Respuesta en frecuencia: 
    • 20 Hz ~ 50 kHz: amortiguación <1,3 dB
    • 20 Hz ~ 20 KHz: atenuación <0,2 dB
  • Distorsión armónica total (THD) + ruido: Aproximadamente 0,025 % (1 kHz/0 dB a 32 Ω)
  • Relación señal/ruido: ≥115dB (ponderado A)
  • Nivel de ruido:<7,2 uV (ponderado A)
  • Gama dinámica≥107dB
  • Impedancia de salida:<1Ω
  • Voltaje de salida pico11Vp-p
Do you have questions about this or other products in our catalogue? Contact us
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