FiiO K9 Desktop DAC with Headphone Amplifier

• High performance ES9068AS*2
• 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

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.

Hi-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 300 Ohm and up to 2000mW at 32 Ohm. No matter if you low-impedance or high-impedance headphones, the K9 will drive it with aplomb.

Fully balanced design

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 maximum 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 guarantee 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.

Robust power supply, ample power

The linear transformer is paired with 4 massive 4700uF capacitors to provide clean continuous power. The digital and analog sections of the K9 receive power separately to reduce interface between the two audio circuits, for pure and faithful reproduction of the music.

Multiple LDOs in multiples stages

The power stabilization and filtering whiten 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

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

High-res Bluetooth Adapt 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 hight quality and low latency.

*Bluetooth 5.1, supported formats: LDAC/aptX Adaptive/aptX/aptX HD apt LL/AAC/SBC

Compatible with UAC 1.0/UAC 2.0

The K9 supports both UAC 1.0 and UAC 2.0 modes, allowing you to use the K9 with either devices that are simply plug-and-play or 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 devices support

• LO: only the rear RCA+XLR analog outputs are active, at max output and cannot be adjusted by the volume knob
• PRE: only the rear RCA+XLR analog outputs are active and can be adjusted by the volume knob
• PO: only the front headphone outputs are active and can be adjusted by the volume knob

Horizontal or vertical

The K9 adopts the well received design 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 to become a versatile part of your desktop setup.

RGB lights

The iconic FiiO volume knob is powered by ADC curve reconstruction to allow your to precisely and smoothly adjust through 120 levels of volume. The RGB lights around the knobs indicate the current audio sampling rate and Bluetooth format.

FiiO Control App

You can connect the K9 to your phone via Bluetooth, and with the addition of the FiiO Control App you get access to more functionality, such as adjustment of filters, status indicators, EQ, channel balance.

*EQ only works in Bluetooth mode.

Multiple intelligent protection systems

Three intelligent protection systems: preventing overheating, overload, and DC protection, constantly make sure that the K9 delivers high-energy music without wearing itself out, so that you can listen to your music worry-free.

Multiple connections

- Connect via USB cable to a desktop ore 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

Basic specifications

DAC: ES9068AS*2

Decoding chip: XMOS XUF 208

Amplifier: Dual THX ZZZ 788+

Bluetooth chip: QCC5124, Bluetooth 5.1

Bluetooth format support: LDAC/aptX Adaptive/aptX HD/aptX LL AAC/SBC

Outputs: 6.35mm/4.4mm/XLR-4/RCA/XLR

Inputs: USB/OPT/COAX/RCA/4.4mm

Dimensions: 200x224.5x72 mm (excluding feet)