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b-Stock
B-Stock product, (read below) in excellent condition with original packaging, 2 year warranty.
FiiO K11 is a brand-new USB DAC/AMP with a truly balanced design. It comes with CS43198 high-performance 32-Bit DAC that provides exceptional high-resolution PCM and DSD signal decoding. It comes equipped with a bunch of input-output options including USB, Coaxial, and Optical inputs as well as 4.4mm, 6.35mm, and RCA output options. FiiO K11 is a pocket-friendly desktop DAC/AMP that can be used worry-free with a variety of devices including PC, Laptops, smartphones, and even gaming consoles including PS5 and Nintendo Switch.
Premium Audio Circuitry
Over the years, FiiO has designed and released several successful USB DAC/AMP models, the latest K11 is designed with specially crafted audio circuitry that promises top-quality sound performance. The K11 is equipped with a high-performance CS43198 DAC chipset that delivers ultimate performance in decoding high-resolution 32-bit/384kHz PCM and Native DSD256 audio signals.
Variety Of Input-Output
FiiO K11 houses multiple input-output options. We have digital input via coaxial, optical, and USB input modes, and we have outputs via 4.4mm balanced, 6.35mm single-ended, and RCA analog line-out options. K11 easily meet your need and requirements for a capable audio setup at a pocket-friendly price tag.
USB Input
FiiO K11 USB DAC/AMP supports worry-free USB connection with a variety of devices. It can run without any driver installation. The K11 supports a variety of devices including PCs, Laptops, Smartphones, Tablets, and even gaming consoles(PS5, Nintendo Switch, etc.).
High-Power Amplification Section With Three-Level Gain
FiiO K11 is a highly capable USB DAC/AMP. The device is equipped with a powerful headphone amplifier section with three-level gain modes that produce a strong output delivering up to 1400mW of clear output at 32Ω of impedance load through the balanced connection output. It can easily drive most headphones and in-ear monitors with ease.
Low-Noise Power Supply
FiiO K11 is designed with a specially-developed low-noise power supply section. Using more than 16 low-noise LDOs for precise voltage stabilization and an external 12V power supply, the K11 achieves robust performance with stable power delivery to all sections of the audio circuitry.
Fully-Clear Display
FiiO K11 is equipped with a high-controast durable VA display screen. It displays the active sampling rate, volume level, gain level, and activate output mode.
Adjustable RGB Logo
FiiO Logo on the top of the K11 DAC/AMP has an RGB Illuminated design. It glows in different colours based on the active file bitrate. Its brightness, colour, and light patterns are all adjustable using the multi-function knob.
Multi-Function Knob Control
FiiO K11 has a minimalistic design with a multi-function knob. This knob can act as a power on/off button, volume adjustment, menu exploring, screen control, etc. Users can also switch between the Line-out and Phone-out modes by simply double-pressing the knob.
Specifications | |||
Name/Model | K11 | Hardware solution | SoC: GD32F303RE, DAC:CS43198 USB decoding: SA9312L SPDIF decoding: MS8422N AMP: SGM8262-2*2 |
color | Black/Silver | Volume control | Volume knob |
Weight | About 407g | Dimensions | 147x133x32.3mm (Including feet) |
Gain | L/M/H | Adaptive impedance | PO: 8~150Ω |
Driver-free mode (switch mode) | Supported | BAL: 8~350Ω | |
Max supported sampling rate | 384kHz-32bit/DSD256 Native 16/24/32bit (USB DAC) | Sampling rate indication | Show on display screen |
192kHz-24bit (Coaxial) | LOGO indicator light shows as default: Cyan: 48KHz and below/Yellow: 48kHz and above/Green: DSD | ||
96KHz-24bit (Optical) | Firmware upgrade | Supports upgrade through USB | |
FiiO Control | N/A |
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Buttons and 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 output interface | standard 4.4mm socket | Headphone out | Standard 6.35mm port |
Power Supply Parameters | |||
Power Supply | DC 12V/2A | Battery capacity | No battery |
Audio Parameters | |||
Parts of performance and parameters of Line-out output (RCA) | |||
THD+N & Noise | <0.00035% (1kHz/-0.3dB@10KΩ) | SNR | ≥126dB (A-weighted) |
Crosstalk | ≥120dB | Noise floor | <0.9uV (A-weighted) |
Frequency response | 20Hz~50kHz: damping<0.1dB | Line output level | 1.95Vrms |
20Hz~20KHz: damping<0.1dB | |||
Parts of performance and parameters of headphone output (6.35mm) | |||
Output power | L+R≥720mW +720mW (16Ω, THD+N<1%) | Output impedance | <1.2Ω |
L+R≥520mW +520mW (32Ω, THD+N<1%) | Crosstalk | ≥71dB | |
L+R≥60mW+60mW (300Ω, THD+N<1%) | Peak output voltage | 12Vp-p | |
SNR | ≥123dB (A-weighted) | THD+N & Noise | <0.00059% (1kHz/-8.1dB@32Ω) |
Frequency response | 20Hz~50kHz: damping<0.2dB | Noise floor | <2.8uV (A-weighted) |
20Hz~20KHz: damping<0.1dB | |||
Parts of performance and parameters of headphone output (4.4mm) | |||
Output power | L+R≥570mW+570mW (16Ω, THD+N<1%) | Output impedance | <2.4Ω |
L+R≥1400mW+1400mW (32Ω, THD+N<1%) | Crosstalk | ≥106dB | |
L+R≥250mW+250mW (300Ω, THD+N<1%) | Peak output voltage | 24.5Vp-p | |
SNR | ≥123dB (A-weighted) | THD+N & Noise | <0.0010% (1kHz/-14.5dB@32Ω) |
Frequency response | 20Hz~50kHz: damping<0.2dB | Noise floor | <4.9uV (A-weighted) |
20Hz~20KHz: damping<0.1dB |
A ´B-Stock´ is a product which has been returned by a customer within their 14/30 Day Money Back Guarantee.
These items are offered at a special, reduced price. Please note, that occasionally the packaging is no longer in pristine condition.
B-Stock products are in full working order and are checked by specialists before releasing them as B-Stock. They come with the full 2 year warranty as any other new product.
Any special comments about a B-Stock product will be noted at the beginning of the article description.
About FiiO Electronics Technology Co., Ltd.
FiiO Electronics Technology Co., Ltd. was established in 2007. It is a high-tech enterprise that combines research, development, production and sales, and its sales are mainly based on its own FiiO brand as opposed to OEM/ODM. It focuses on digital audio, with current mainstay products being portable headphone amplifiers, DAC / amps and portable digital audio players.
FiiO: It is composed of Fi (Fidelity) from HiFi and iO (represents number 1 and 0) which indicates the sincerer feeling and more convenient life the digital tech has brought to us.
飞傲: The Chinese transliteration of FiiO, as well as representing youthful vigor and the active & innovative spirit of the company.
Audio products are meant to fulfill the spiritual pleasure of users.
Customer Service
About products
Research & Development Team
Research & Development Investment
FiiO keeps bringing in advanced equipments and high-tech talents so as to ensure the stable growth and long term competitive edge. Up till now, the team size has expanded three times than that of 2007 when we established.
Team Composition
The R&D team is made up of development dep, engineering dep and QC dep, with 60+engineers in total.
Authorized certifications
FC, CE, KC, CCC and ISO9001:2008 ensure the safety and quality of the products.
Production management
FiiO has strict requirements to production with almost “zero tolerance” even to small problems, which is strictly in compliance with the International Quality Management System ISO9001.
QC Equipment
Customer oriented
Driven by customers’ needs, we innovate constantly and response promptly to the market changes. We develop new products based on customers’ needs and compete for more market shares.
Brand Spirit
the earliest company that designed the minimum volume headphone amplifier. First dockable amp & DAC product. First amp specially designed for iPod/iPhone. First amp with adjustable power supply and power supplied by mobile phone battery. First multifunctional headphone amp & DAC for Android smarphone. First Hi-Res music player at a price lower than 1000RMB supporting 192K music. First Android-based Hi-res music player.
Repair Rate < 1%. Sound Quality Control system. Original components imported from TI, Wolfson, Maxim. Company-wide quality control. +20 quality engineers and inspectors. Complete testing facilities.
CEO at the frontline of customer service. 100% response to enquiries. The most popular headphone amplifier brand on Head-Fi. First class website and contents in the audio industry. Interaction with and support to customers on Facebook and Microblog (twitter-like social website).
Brand Mission
FiiO designs, produces and sells high-quality products at favorable prices to those who love music and style.