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FiiO K9

FiiO Desktop DAC and Headphone Amplifier - K9



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Desktop DAC and Headphone Amplifier

High performance ES9068AS*2 DAC | THX AAA 788+ amplifier

Dual-mode clock management | QCC5124 Bluetooth

LDAC/aptX Adaptive and other high-res Bluetooth format support

App connectivity | Truly balanced design

Dual-voltage linear transformer | Variety of inputs and outputs

 

Selling Points

 

High-performance dual cores for soul- shaking sound

Two ES9068AS DACs handle the left and right channels, and make up the high-quality "core" of the K9. Listen to your favorite playlist and be instantly immersed in the music.

 

High-end amplifier Refreshingly capable

The FiiO K9's ace up its sleeve is the THX AAA 788+ amplifier, giving it an extraordinary 1% undistorted power output up to 780mW at 300Ω and up to 2000mW at 32Ω. No matter if you use low-impedance or high-impedance headphones, the K9 will drive it with aplomb.

 

Precisely designed

Fully balanced design music to your ears

From the DAC, to the volume adjustment, to the amplification, every part of the K9 is truly balanced for greatly reduced crosstalk and more authentic sound.

 

Partitioned design for max performance of each section

The PCB of the K9 features a partitioned layout, fully separating the major sections of the audio circuit – the power supply, signals, and analog signal loop. This guarantees the integrity of the audio signal being processed.

 

Six-stage audio circuit faithfully reproducing sound

The desktop-grade six-stage audio circuit was meticulously designed to ensure a pure, delicate yet rich sound. I/V conversion, LPF filter, digital volume adjustment, buffer amplifier, pre-amplifier, post-stage drive

 

Electricity is the mother of sound

Robust power supply, ample power

The linear transformer is paired with 4 massive 4700uF capacitors to provide clean continuous power.

 

Isolated digital and analog section power supply, for purer sound

The digital and analog portions of the K9 receive power separately to reduce interference between the two audio circuits, for pure and faithful reproduction of your music.

 

Multiple LDOs in multiple stages, truly stable power

The power stabilization and filtering within the audio circuit plays a big part in ensuring excellent sound quality. Each stage of the audio circuit employs ultra-low-noise LDOs for voltage regulation.

 

Dual-mode clock management, even more improvement to sound

Accurate and stable dual-mode clock management allows the K9 to easily play back high-resolution audio with the greatest fidelity, as if you were there with the performing artists.

* Supports up to 768kHz/32bit PCM and DSD512

 

High-res Bluetooth Adept at all of your audiovisual needs

The K9 employs the QCC5124 Bluetooth chip with support for LDAC/aptX HD/aptX Adaptive and other high-res Bluetooth formats. With the K9, you can listen to music, watch videos, and play video games with high quality and low latency.

 

Compatible with UAC 1.0/UAC2.0, highly adaptable

The K9 supports both UAC1.0 and UAC2.0 modes, allowing you to use the K9 with either devices that are simply plug-and-play or with devices that can work with the K9 with an additional driver for even better compatibility. And the FiiO Control App allows you to easily switch between UAC1.0 and UAC2.0 modes.

*UAC1.0 for PS5 and other device support

 

 

Neatly handsome Horizontal or vertical

The K9 adopts the well-received design language of other FiiO desktop units, and features an all-aluminum construction made from an integrated stretching + CNC process to ensure the body's strength and precise finish. And with the vertical stand, the K9 can be used either vertically or horizontally, allowing it to become a versatile part of your desktop setup.

 

A weighty feel For a weighty sound

The iconic, weighty FiiO volume knob is powered by ADC curve reconstruction to allow you to precisely and smoothly adjust through 120 levels of volume, with minimal noise and volume deviation between the left and right channels.

 

Light it up Let the high-res music commence

Not only do the RGB lights around the knobs give the K9 and the desk space around it some fun personality, they also conveniently indicate the current audio sampling rate and Bluetooth format.

 

Professional PEQ For what you love

Through the FiiO Control app, you can quickly switch between 7 music tuning styles preset on the K9. If the selected tuning style fits the music you are listening to, you can acquire a more vivid and pleasant experience. If the preset tuning style is not to your liking, the 3 self-define PEQ (Parametric Equalizer) designs will help to fine adjust to your favorite listening style.

*This function is only valid for Bluetooth decoding.

 

To show off your skills

One app is enough

You can connect the K9 to your phone via Bluetooth, and with the addition of the FiiO Control app you get access to even more functionality. Adjust various settings such as filters, status indicators, EQ, and channel balance to exactly your liking.

*EQ only works in Bluetooth mode.

 

Multiple intelligent protection systems Always ready to go

Three intelligent protection systems – preventing overheating, overload, and DC protection – constantly make sure that the K9 delivers high-energy music without wearing itself out. Listen worry-free with the K9!

 

Immerse yourself in fabulous music

Connect via USB cable to a desktop or notebook computer

 

Connect to a phone via USB-B to Type-C cable

 

 

Connect to a phone, tablet, etc. via Bluetooth

 

 

Connect to a desktop digital player

 

 

Connect to external amplifiers or active speakers

 

 

 

Comparison table of the K series products

 

 

Abundant accessories

K9*1, Power cord*1, Headphone plug adapter*1, USB data cable*1, Feet pads*6, Fuse*1, Stand*1, Quick start guide*1, Voltage selection card*1, Warranty card*1

 
keys and interfaces
Digital coaxial input interfaceRCA socket
Balancing Line Input Interface4.4mm balance socket
USBUSB B
Balancing line output interfaceXLR3 balance socket
Balancing output interface4.4mm socket, XLR4 balanced socket
digital fiber input interfaceoptical fiber socket
Single-ended input interfaceRCA socket
keySolid key + toggle switch
Specifications
adaptation impedance16~600 Ω
charging indicator
Bluetooth Reception (5.1)AAC/SBC/aptX/aptX LL/aptX HD/LDAC/atpX Adaptive
Low Power Reminder
firmware upgradeThe system firmware and Bluetooth version can be upgraded through USB
sample rate indicationsupport
FiiO Controlsupport
channel balanceL12 ~ R12 (0.5dB per stage)
Volume control typeanalog potentiometer (ADC sampling)
hardware solutionDAC:ES9068A * 2,USB:XMOS XUF208, Bluetooth: QCC5124,LPF:OPA1612 * 2, Volume IC:NJU72315 * 2,AMP:THX AAA788 + * 2, Transformer: Linear Transformer;
The highest supported sampling rate768kHz-32bit/DSD512(USB DAC), 192 kHz-24bit (coaxial), 96 KHz-24bit (fiber)
Bluetooth format indicatorSBC: blue, AAC: cyan, aptX HD: yellow, aptX: purple, aptX LL: purple, LDAC: white, atpX Adaptive: green
Bluetooth emission
Deep StandbyLong press the multi-function key for about 3 seconds
size200x 224.5x 72mm (excluding foot pads)
Bluetooth format indicationsupport
gainL/M/H
weightApproximately 2660g
colorblack
Name/ModelK9
Audio parameters
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - frequency response20Hz~50kHz (-1.5dB)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - bottom noise<7.1 μV(UAC, gain m, maximum volume)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - Output Power 3≥780mW(300Ω / THD+N<1%,AUX IN)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - Output Power 2≥2W(32Ω / THD+N<1%,AUX/UAC/SPDIF/BT IN)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - Output Power 1≥1W(16Ω / THD+N<1%,AUX/UAC/SPDIF/BT IN)
Headset Output Part Performance Parameters (6.35mm) - peak output voltage>21Vp-p
Headset Output Part Performance Parameters (6.35mm) - signal-to-noise ratio≥ 124dB (A weight)
Headset Output Part Performance Parameters (6.35mm) - distortion plus noise<0.00028% (1kHz/32 Ω/A weighting)
Headset Output Part Performance Parameters (6.35mm) - channel separation≥ 75dB (1kHz/32 Ω)
Headset Output Part Performance Parameters (6.35mm) - output impedance<1 Ω(32 Ω)
Headset Output Part Performance Parameters (6.35mm) - frequency response20 Hz~50kHz (-1.5dB)
Headset Output Part Performance Parameters (6.35mm) - bottom noise<4.8 μV(A weighting)
Headset Output Part Performance Parameters (6.35mm) - Output Power 3≥200mW(300Ω / THD+N<1%,AUX IN)
Headset Output Part Performance Parameters (6.35mm) - Output Power 2≥1.5W(32Ω /THD+N<1%,AUX/UAC/SPDIF/BT IN)
Headset Output Part Performance Parameters (6.35mm) - Output Power 1≥1W(16Ω / THD+N<1%,AUX/UAC/SPDIF/BT IN)
Performance Parameters of Balanced Line Output - line output level4.8Vrms (1kHz/10kΩ)
Performance Parameters of Balanced Line Output - bottom noise<3.1 μV(A weighting)
Performance Parameters of Balanced Line Output - signal-to-noise ratio≥ 124dB (A weight)
Performance Parameters of Balanced Line Output - frequency response20Hz~50kHz (-1.5dB)
Performance Parameters of Balanced Line Output - channel separation≥ 120dB (1kHz/10 kΩ)
Performance Parameters of Balanced Line Output - distortion plus noise<0.00025%(1kHz/10 kΩ/A weighting)
Some performance parameters of single-ended line output - line output level2.4Vrms (1kHz/10kΩ)
Some performance parameters of single-ended line output - bottom noise<2.9 μV(A weighting)
Some performance parameters of single-ended line output - signal-to-noise ratio≥ 119dB (A weight)
Some performance parameters of single-ended line output - frequency response20Hz~50kHz (-1.5dB)
Some performance parameters of single-ended line output - channel separation≥ 111dB (1kHz/10 kΩ)
Some performance parameters of single-ended line output - distortion plus noise<0.00026%(1kHz/10 kΩ/A weighting)
Power Supply Parameters
The duration of the PO
Charging time
battery capacity
power supplyAC 100-120V ~/AC 220-240V ~ (recommended)
keys and interfaces
Headset output interfacestandard 6.35mm socket
Single-ended line output interfaceRCA socket
Audio parameters
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - peak output voltage>42Vp-p
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - signal-to-noise ratio≥ 119dB (A weight)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - distortion plus noise<0.00029% (1kHz/32 Ω/A weighting)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - output impedance<1 Ω(32 Ω)
Balance Headset Output Part Performance Parameters (4.4mm/XLR4) - channel separation≥ 114dB (1kHz/32 Ω)



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