FiiO K11 R2R Desktop DAC and Headphone Amplifier (Black)

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FiiO K11 R2R Desktop DAC and Headphone Amplifier (Black)


	₹ 26380.0 includes GST and import duties.
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Brand:	FiiO
SKU:	7074308849749
MPN:	K11R2R-B

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FiiO K11 R2R Overview

Get the most out of your audiophile headphones and audio content with the K11 R2R from FiiO, a desktop DAC and headphone amp with fully differential 24-bit R2R resistor arrays and up to 1300mW of output per channel into 32 ohms. Sporting up to 384 kHz upsampling via OS mode, you can experience a refined sound with any audio content.

The FiiO K11 R2R supports 24-bit (32 bit with USB) / 384 kHz decoding for PCM files and up to DSD256 for compatible DSD files. The DAC features plenty of high-quality chips for maximizing sonic performance, including Ti OPA1642 and SGM8262 op-amps, an SA9312L USB controller, a CS43198 DAC chip, and the NJW1195A 4-channel volume controller for the main control knob. Three selectable gain levels and volume curves ensure optimal compatibility with any audio content. The unit sports a crystal-clear high-contrast LCD display for easy operation, as well as RGB logo lighting for a stylish look. Connections include optical TOSLINK and coaxial RCA digital inputs/outputs, RCA line outputs, USB-C for maximum digital audio quality, and separate balanced 4.4mm and unbalanced 1/4" headphone outs. The K11 R2R includes an external power adapter with power cable, a USB-C to USB-A data cable, and a 3.5mm to 1/4" TRS plug adapter.

Fully Differential 24-Bit R2R DAC Resistor Arrays

FiiO's newly self-developed four-channel fully differential 24-bit R2R DAC consists of 96 precision thin-film resistor arrays per channel, totaling 192 resistors with 0.1% tolerance and low temperature drift (30ppm). This configuration delivers a unique and charming sound.

Double the Fun with Dual NOS/OS Modes

NOS (non-oversampling) mode: maintains the original sampling rate for decoding, preserving an authentic sound and providing an organic and captivating musical experience

OS (oversampling) mode upsamples globally to a high sampling rate of 384 kHz, for superior audio performance and an even more refined and clear sound

True 24-Bit Decoding

Support for 24-bit / 384 kHz PCM and DSD256 decoding means the K11 R2R can easily handle high-precision audio signals and fully exhibit the details within, providing a audiophile-level listening experience.

High-Quality Electronic Volume Control

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

3 Gain Levels and 3 Independent Volume Curves

The three independent gain levels and volume curves allow the K11 R2R to provide better performance with various types of headphones. Whether you are using sensitive earphones or harder-to-drive over-ear headphones, you can find an ideal gain level and curve for an optimal listening experience.

Specially Designed Audio Circuit

The audio signal is transmitted via 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. Then, it passes through two Ti OPA1642 op-amps for low-pass filtering and single-ended analog signal conversion.

The output stage uses two SGM8262 op-amps for 4-way phase inversion and amplification, resulting in outputs of single-ended and balanced analog signals. The audio circuit features specially designed headphone protection circuity and a pop-noise elimination system.

Specially Designed Power Supply

The K11 R2R uses up to 17 low-noise LDO precision regulator ICs and 2 DC-DC converters, providing multichannel power supply of -9, 8, ±7.5, ±6, 5.4, 3.3, 1.8, and 1.2V. These are combined with an external custom 12V switching power supply to ensure the purity of the power being supplied to the DAC and to provide a solid foundation for stronger power output.

High-Quality Beryl Solid Capacitors

The capacitors' ultralow ESR, combined with excellent anti-interference characteristics, allow them to provide a stable and clean power supply and thus achieve high-quality sound.

Hear Every Last Detail

Under a 32-ohm load, the K11 R2R is capable of pushing 1300mW per channel under balanced modes. This allows it to easily drive many high-fidelity audiophile headphones and earphones to fully unlock their potential.

One Source of Total Control

The K11 R2R's multifunctional volume knob is used to power the device on and off�for menu operation, for volume adjustment, and for other functions. The knob is designed so that you can quickly execute various complex actions by simply pressing and turning the knob. You can also quickly switch between output modes by double-pressing the knob, making it easier to connect to to different audio setups.

Adjustable RGB Logo Lighting

The FiiO logo is illuminated with RGB lighting, giving you a quick way to identify the sampling rate of the current audio being played back. Six LED strips work in conjunction with carefully placed reflective film and parts of the body designed to reflect light to make the light show uniform and elegant.

Durable Design Features

Specialized RCA metal pressing for enhanced stability, reliable connections, and durability
Thermal silicone gel and aluminum alloy heat sink for fast heat dissipation
Phosphor copper metal shielding for corrosion resistance and anti-oxidative qualities
Shielding resists external interference to accurately process signals
DC protection to avoid headphone damage
Smart power saving automatically enters low-power mode when no audio is detected for a long time

Items Included

FiiO K11 R2R Desktop DAC and Headphone Amplifier (Black)
Power Adapter
Power Cable
USB-A to USB-C Data Cable
3.5mm TRS to 1/4" TRS Plug Adapter
Limited 1-Year Manufacturer Warranty (Maintenance)
Limited 1-Month Manufacturer Warranty (Replacement)

Additional Resources

No additional resources available

FiiO K11 R2R Specs

Key Specs

Number of Headphone Channels	Single Channel
Recommended Headphone Impedance	8 to 350 Ohms (Balanced)
Headphone Output Power	1/4" Unbalanced: 520 mW into 32 Ohms 59 mW into 300 Ohms 4.4 mm Balanced: 1400 mW into 32 Ohms 250 mW into 300 Ohms
Analog Audio I/O	1x 4.4 mm Balanced Stereo Headphone Output (Front Panel) 1x 1/4" TRS Unbalanced Stereo Headphone Output (Front Panel) 2x RCA Coaxial Unbalanced Stereo Line Output (1 Stereo Pair, Rear Panel)
Digital Audio I/O	1x TOSLINK Optical S/PDIF Input 1x RCA Coaxial S/PDIF In or Out
USB I/O	1x USB-C (Digital Input)
Wireless	No
Frequency Response	RCA Line Outputs: 20 Hz to 50 kHz 20 Hz to 20 kHz (OS Mode)
Power Requirements	AC/DC Power Adapter (Included)

Number of Headphone Channels	Single Channel
Recommended Headphone Impedance	8 to 350 Ohms (Balanced)
Headphone Output Power	1/4" Unbalanced: 520 mW into 32 Ohms 59 mW into 300 Ohms 4.4 mm Balanced: 1400 mW into 32 Ohms 250 mW into 300 Ohms
Digital Chipset	DAC: CS43198 USB: SA9312L
Analog Circuitry	Op-Amp: 2x Ti OPA1642 2x SGM8262 IC: NJW1195A
EQ	No
Display	Monochrome LCD

Connectivity

Analog Audio I/O	1x 4.4 mm Balanced Stereo Headphone Output (Front Panel) 1x 1/4" TRS Unbalanced Stereo Headphone Output (Front Panel) 2x RCA Coaxial Unbalanced Stereo Line Output (1 Stereo Pair, Rear Panel)
Digital Audio I/O	1x TOSLINK Optical S/PDIF Input 1x RCA Coaxial S/PDIF In or Out
USB I/O	1x USB-C (Digital Input)
Wireless	No

Performance

Frequency Response	RCA Line Outputs: 20 Hz to 50 kHz 20 Hz to 20 kHz (OS Mode)
Maximum Output Level	RCA Line Outputs: 2.7 Vrms 1/4" Headphone Outputs: 11 V p-p 4.4 mm Headphone Outputs: 23 V p-p
Dynamic Range	? 107 dB
Impedance	1/4" Headphone Outputs: < 1 Ohm 4.4 mm Headphone Outputs: < 1.5 Ohms
THD+N	Headphone Outputs: 0.025%
SNR	? 115 dB
Noise	RCA Line Outputs: 5.1 µV (A-Weighted) 1/4" Headphone Outputs: 7.2 µV (A-Weighted) 4.4 mm Headphone Outputs: 14.1 µV (A-Weighted)
Crosstalk	RCA Line Outputs: ? 111 dB 1/4" Headphone Outputs: ? 72 dB 4.4 mm Headphone Outputs: ? 107 dB

Digital Audio

Sample Rates	USB-C Input: 384 kHz (DSD, PCM) RCA Coaxial S/PDIF Input: 192 kHz (PCM) TOSLINK Optical S/PDIF Input: 96 kHz (PCM)
Bit Depths	Up to 32-Bit

Power

Power Requirements	AC/DC Power Adapter (Included)
Ground Lift	No
DC Input Power	12 VDC at 2A
AC/DC Power Adapter	12 VDC at 2 A (Included)
Current Consumption	2 A (Typical)

Physical

Dimensions	5.8 x 5.2 x 1.27" / 14.7 x 13.3 x 3.23 cm (with Feet)
Weight	14.4 oz / 407.0 g

Packaging Info

Package Weight	2.105 lb
Box Dimensions (LxWxH)	10.2 x 8.3 x 2.4"

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Quantity	Price
2	₹ 25852.4
3-5	₹ 25588.6
5-10	₹ 25061.0
10+	₹ 24533.4

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FiiO K11 R2R Desktop DAC and Headphone Amplifier (Black)

Description

FiiO K11 R2R Overview

Items Included

Additional Resources

FiiO K11 R2R Specs

Bulk Discount

Customer Reviews

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