FiiO K11 R2R Desktop DAC & Headphone Amplifier
In stock
Features
| Headphone Socket | No |
|---|---|
| Brand Color | None |
| Warranty The length of time your product is protected by warranty | 1 Year |
| Product Type | Other |
Tech Specs
- Size and Weight
- Dimensions - 147mm x 133mm x 32.3mm
- Weight - About 420g
- General
- Hardware Solution - SoC: GD32F303RE, DAC: FIIO-developed R2R DAC, USB decoding: SA9312L, AMP: SGM8262-2 x2
- Volume Control - Volume knob
- Gain - L/M/H
- Driver-Free Mode (switch mode) - Supported
- Adaptive Impedance - PO: 8~150Ω
- BAL: 8~350Ω
- Oversampling Setting - OS/NOS
- FIIO Control - N/A
- Max Supported Sampling Rate - 384kHz-32bit/DSD256 (USB DAC)
- 192kHz-24bit (Coaxial)
- 96kHz-24bit (Optical)
- Sampling Rate Indication - LOGO indicator light shows as default: Cyan: 48KHz and below/Yellow: above 48kHz/Green: DSD
- Show on display screen
- Firmware upgrade - Supports upgrade through USB
- Buttons & Ports
- Knob - Encoder knob (including volume adjusting and menu confirming)
- USB - Type-C (data transmission)
- Single-Ended Line-Out - RCA port
- Digital Optical In - Optical port
- Digital Coaxial In - RCA port
- Digital coaxial out - RCA port (only works in USB mode)
- Balanced Out - Standard 4.4mm port
- Headphone Out - Standard 6.35mm port
-
- Power Supply
- Power Supply - DC 12V/2A
- Battery Capacity - No battery
- Audio
- Parts of Performance and Parameters of Line-Out Output (RCA, OS Mode)
- THD+N & Noise - About 0.025% (1kHz/0dB@10KΩ)
- SNR - ≥115dB (A-weighted)
- Crosstalk - ≥111dB
- Noise Floor - <5.1uV (A-weighted)
- Frequency Response - 20Hz~50kHz: damping <1.2dB
- 20Hz~20KHz: damping <0.2dB
- Dynamic Range - ≥107dB
- Line Output Level - 2.7Vrms
- Parts of Performance and Parameters of Headphone Output (6.35mm, OS Mode)
- Output Power - L+R≥660mW +660mW(16Ω，THD+N <1%)
- L+R≥460mW +460mW(32Ω，THD+N <1%)
- L+R≥50mW+50mW (300Ω，THD+N <1%）
- THD+N - About 0.025% (1kHz/0dB@32Ω)
- SNR - ≥115dB (A-weighted)
- Noise Floor - <7.2uV (A-weighted)
- Channel Crosstalk - ≥72dB
- Dynamic Range - ≥107dB
- Frequency Response - 20Hz~50kHz: damping <1.3dB
- 20Hz~20KHz: damping <0.2dB
- Output Impedance - <1Ω
- Peak Output Voltage - 11Vp-p
- Parts of Performance and Parameters of Headphone Output (4.4mm, OS Mode)
- Output Power - L+R≥520mW+520mW (16Ω, THD+N <1%)
- L+R≥1300mW+1300mW (32Ω, THD+N <1%)
- L+R≥220mW+220mW (300Ω, THD+N <1%)
- THD+N - About 0.025% (1kHz/-11.6dB@32Ω)
- SNR - ≥115dB (A-weighted)
- Noise Floor - <14.1uV (A-weighted)
- Channel Crosstalk - ≥107dB
- Dynamic Range - ≥107dB
- Frequency Response - 20Hz~50kHz: damping <1.3dB
- 20Hz~20KHz: damping <0.2dB
- Output Impedance - <1.5Ω
- Peak Output Voltage - 23Vp-p
Description
he FiiO K11 R2R Desktop DAC & Headphone Amplifier is engineered to deliver exceptional audio performance, incorporating cutting-edge technology to enhance your listening experience. At its core, the K11 features a fully differential true 24-bit R2R DAC architecture.
This innovative design utilizes precision thin-film resistor arrays, totaling 192 resistors per channel, ensuring unparalleled sound accuracy. The result is a remarkably clean signal with reduced noise and distortion, allowing listeners to enjoy their music with a depth and clarity that standard DACs cannot achieve.
The K11 R2R stands out as a sophisticated solution for audiophiles seeking an immersive audio experience in a compact form.
Dual Operating Modes for Versatile Listening
One of the standout features of the K11 R2R is its dual operating modes: NOS (Non-Oversampling) and OS (Oversampling). In NOS mode, the amplifier maintains the original sampling rate, preserving the integrity of the audio signal and providing a natural listening experience.
Conversely, OS mode upsamples audio to a high sampling rate of 384kHz, enhancing clarity and detail for those who prefer a more refined sound. This versatility allows users to select the mode that best suits their audio preferences, making the K11 R2R adaptable to various listening scenarios, whether for casual enjoyment or critical listening sessions.
Advanced Audio Circuit Design
The K11 R2R boasts a meticulously crafted audio circuit designed for optimal performance. Audio signals are processed through a sophisticated digital audio bridge and an FPGA, ensuring precise decoding before reaching the R2R DAC. After decoding, the signals are filtered and converted to analog through high-quality op-amps, delivering both single-ended and balanced outputs.
This advanced design minimizes interference and maximizes sound quality, resulting in a richer, more dynamic audio experience. Additionally, the inclusion of a headphone protection circuit and a pop noise elimination system guarantees reliable operation, allowing you to focus solely on your music.
Robust Power Supply for Enhanced Performance
To support its advanced features, the K11 R2R is equipped with a specially-designed power supply that employs multiple low-noise LDO precision regulators and DC-DC converters. This comprehensive power management system ensures that the amplifier receives a clean and stable power supply, essential for high-quality audio output.
With an impressive output capability of 1300mW+1300mW under balanced modes, the K11 R2R can effortlessly drive a wide range of HiFi headphones and earphones, allowing you to fully experience the nuances of your favorite tracks without compromising on performance.
User-Friendly Design and Custom Display
The FiiO K11 R2R is designed with user convenience in mind, featuring a high-contrast LCD screen that displays vital information such as sampling rate, volume, and gain settings at a glance. The amplifier's multi-function volume knob allows for easy control of power, volume, and menu navigation, enhancing the overall user experience.
Additionally, the adjustable RGB logo lighting provides a stylish touch, allowing you to personalize the device's appearance while also indicating the current sampling rate. This thoughtful design not only looks great on any desktop but also enhances usability for both novice and experienced users.
Comprehensive Safety Features and Included Accessories
Safety and reliability are paramount in the K11 R2R's design, featuring robust protection systems such as DC protection to prevent headphone damage from abnormal output currents. The amplifier also incorporates smart power-saving features, automatically entering low-power mode when idle to conserve energy and prevent overheating.
Each K11 R2R comes with a complete package that includes a power adapter, USB data cable, headphone adapter, and a quick start guide, ensuring you have everything needed for a seamless setup. This commitment to quality and safety, combined with the amplifier's impressive performance, makes the FiiO K11 R2R an outstanding choice for anyone serious about audio.