FiiO K3 Desktop USB-C DAC with Headphone amplifier [b-Stock]

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b-Stock

b-Stock product, ( read below) in excellent conditions, with original box, full warranty. NOTE: the rubber feet could have been just installed on the device. 

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78,03 €

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Brand: FiiO

 
Description

K3 Pocket-sized Power Flexibility for your Desktop

Headphone Amplifier & USB-C DAC

2 USB audio modes | PCM384k/DSD256 decoding | Dual headphone outputs Dual digital audio outputs | ADC volume control

Boost your computer's sound with capable decoding

Equipped with an XMOS USB receiver chip, the K3 is capable of decoding up to 384kHz/32 bit PCM and native DSD256 - the same as many DACs costing much more. The K3's dual crystal oscillators ensure that any digital audio signal being fed into the DAC are exactly correct for further enhanced sound quality. Just connect the K3 to your computer via USB to instantly upgrade to high-fidelity sound, and enjoy your music the way is was meant to be heard. 

Highly optimised architecture for maximum potential

The k3's well-thought-out internal design consists of two main layers, working together perfectly in harmony. Digital processing is carried out by the big-performance AKM AK4452 with 32-bit VELVET SOUND technology and fully differential outputs for true balanced output, while the analog signals are handled and amplified by a design consisting of LPF/voltage amplification and a current drive circuit. 

Wash away the noise with low-distortion op-amps

The combination of the proven OPA926 with its low-distortion, low-noise, and high output swing along the professional-grade TI OPA1612 acting as the low-pass filter (LPF) ensures the K3 effortlessly provides highly resolving sound, pumping out 320mW at 16Ω from the balanced output. 

Simply reliable USB power

The K3 adopts the modern Type-C input interface for a more reliable and stable connection, including that of power. However, care to ensure an uncompromised power supply doesn't stop there - the K3 implements over voltage protection (OVP) and a double-filter circuit to ensure power supply stability, while the digital and analog audio circuits each get their own power supply to greatly reduce crosstalk. 

No more channel imbalances with ADC volume control

The secret to effectively eliminating channel volume imbalances is to use an ADC volume control, which is implemented in the K3. Plus, an added side benefits is that by reconstructing the ADC curve, the user is able to smoothly adjust the volume to a more accurate and finer degree, allowing the K3 to be used with headphones of all kinds of sensitivity for a variety of listening needs. 

Gain and bass switches to enhance your experience

The switch for high and low gain ensures that you can use the k3 with a wide variety of headphones, and they your listening volume needs are covered. The hardware bass boost switch enhances the dynamic range of the lower frequencies and gives them some extra punch to really make your song, games and movies come to life. 

Tiny round goodness in the palm of your hand

The all-aluminium black body has been painstakingly CNC-machined, anodised, and sandblasted to ensure that the K3 feels robust yet perfectly textured for a great feel in your hands. Combined with its small size, you can easily take the K3 wherever you need to go. 

Two modes for many situations

Sometimes, you may not have access to a device that can connect to the K3 via USB Audio Class 2. In these situations, you can go to USB Audio Class 1 mode with just the flick of a switch.

*Using the 2.0 mode requires downloading and installing the FiiO USB driver *After switching USB modes, you need to either turn the k3 off and on, or unplug and plug in the USB cable. 

A distinctly cohesive tactile audiovisual experience

The volume knob, with 45° notches etched onto its surface and perfectly sized to allow easy one-finger operation, is designed to perfectly blend in with the curves of the K3's body for a distinctive touch. Next to the volume knob is an RGB light that indicates what kind of digital audio is being input to the K3, visually confirming what you are hearing in your music. 

Different connection options for different scenarios

  1. Connect is to a desktop computer
  2. Use the drive less 1.0 made for business trips
  3. Make it a digital turntable connected to an external decoder
  4. Connect it to a speaker, using the K3 as a DAC

Dual headphone jacks

Being optimised for indoor desktop use, the K3 is equipped with both 3.5mm single-ended and 2.5mm balanced headphone jacks. Both outputs have audio jack detection, which means that when headphones are inserted into the balanced out, balanced boost automatically kicks in resulting in about a 50% output power increase compared to the single-endend out. 

Line out connector

The 3.5,, line out is driven directly by the OPA1612 op-amp, to ensure as little sound quality reduction as possible. The line out output is also adjustable with maximum power output up to 2Vrms, to ensure compatibility with a wide variety of active speakers and external amplifiers.

*When using the line out, please disconnect any headphones.

Coaxial and Optical digital outs

The XMOS USB reciever chip in the K3 directly converts any USB audio input to digital signals output via the coaxial and optical connectors, allowing you to connect to speaker systems, amplifiers, or other external decoders. 

*The volume knob does not control digital outputs volume. *The K3 can output digital audio signal up to 192kHz and DSD64 over DoP. Please adjust the settings of the device you are connecting the K3 to id the device does not support the digitally output format. 

Techncal data:

  • Model No. : K3
  • Color: Black
  • USB Audio Class: UAC1.0 + UAC2.0
  • Volume Knob: ADC
  • Gain: L/H
  • Bass Boost: 0/+6dB
  • Headphone Out 1: 3.5mm single-ended output
  • Headphone Out 2: 2.5mm TRRS balanced output
  • Coaxial Out: RCA for 192kHz, support DSD64 DOP
  • Optical Out: Up to 96kHz
  • USB Chip: XMOS XUF208
  • USB Driver: ASIO/KS/DS/WASAPI/DSD DOP(Native)
  • Audio DAC: AKM AK4452
  • LPF OP AMP: TI OPA1612
  • Driver OP AMP: OPA926×2
  • Output Power 1 (3.5mm headphone output): 320mW(16Ω)
    200mW(32Ω)
  • Output Power 2 (2.5mm TRRS balanced headphone output): 320mW(16Ω) 200mW(32Ω)
  • Line Level: 1.9Vrms
  • DAC: 384kHz/32bit
  • DSD: DSD256
  • SNR: ≥113dB
  • THA^D+N: ≤0.004%
  • Frequency response: 20Hz - 80kHz
  • RGB Indicator: Sample rate ≤ 48kHz  - Blue / Sample rate >48kHz - Yellow / DSD format - Green
  • Dimensions: 70 x 58 x 22 mm
  • Weight: 82g

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

 
Designer

FiiO logo

About FiiO Electronics Technology Co., Ltd.

01 Brand Introduction - HiFi+Fashion

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.

  1. FiiO provides products and service related to music.
  2. We also hope to bring happiness to our users with the provided products and service, which is also the key value of FiiO.

Customer Service

  1. Good after-sales service, more reliable
  2. Great user experience, more pleasure
  3. Variety of activities, more involved

About products

  1. Affordable: FiiO products are well-known for its feature of high cost-performance. Lowering the entry level to make more customers can afford.
  2. Easy to use: FiiO pays great attention to the user experience. We are not only provide products with high quality, but also easy to use and with long lasting durability.
  3. More accessories bring more fun: Enable to play in a variety way and use under more possible environments.
  4. Updates available: Equipped with a variety of ports, it makes the music players can still connect to external amp/DAC for upgraded enjoyment.
  5. Endless transformability available: With replaceable amp module and expandable storage, the X7 can bring more playability.

02 Company Profile

Research & Development Team

  • Twenty years of R&D experience in audio products
  • Former core R&D team for audio products from OPPO
  • A team of 20 professional R&D engineers in software, hardware, industrial design, structure and electro-acoustic.

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 

  • a. AP audio analyzer (valued at 200,000RMB).
  • b. Life-span test platform against high & low temperature, swing and plug & unplug trial.
  • Aging test carriage towards mass production.
  • Aging test machine under high & low temperature.

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.

Company culture - Our Vision

Present the world a better “Made in China”.

Brand Spirit

  • Innovation

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. 

  • Quality

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. 

  • Service

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.

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FiiO K3 Desktop USB-C DAC with Headphone amplifier [b-Stock]

b-Stock product, ( read below) in excellent conditions, with original box, full warranty. NOTE: the rubber feet could have been just installed on the device. 

Write a review

 
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