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FiiO K9 Desktop DAC and Headphone Amp, AKM Edition

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Key Features

  • Flagship dual DAC AKM architecture
  • Cutting-edge desktop audio solution suitable for a range of high-fidelity headphones
  • Dual THX AAA 788+ amplifiers deliver 780mW at 300Ω and up to 2000mW at 32Ω
  • Hi-res QCC5124 Bluetooth chip supports LDAC, aptX HD, aptX Adaptive and more
  • FiiO Control App: Seven music presets, customisable PEQs, balance and more via Bluetooth

FiiO K9 Desktop DAC and Headphone Amp, AKM Edition Overview

View this description in German

The FiiO K9 Desktop DAC and Headphone Amplifier AKM Edition differs from the standard FiiO K9 by utilising flagship dual DAC AKM architecture. It features the AK4191EQ and AK4499EX for high-fidelity audio performance, as well as dual THX AAA 788+ amplifier modules to ensure it can drive headphones of any impedance with ease, adding great power and convenience to your desktop setup.


Also featuring the latest Qualcomm Bluetooth 5.1 chip, FiiO provide easy and pristine connectivity for high-resolution, low-latency wireless codecs, with additional control, PEQ, and system tweaking via the FiiO Control App. Whether you are listening to music, gaming, or watching films, the K9 AKM delivers sound that is as authentic as the original recording.

Product Ref: 294770

Full Description

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Superior Sound with Flagship Dual DAC

Unlike the standard FiiO K9, The FiiO K9 AKM features a combination of AKM's brand-new flagship DAC chips, the AK4191EQ and AK4499EX, representing the performance power of AKM's digital to analogue conversion technology. This pairing delivers a truly superior audio experience, with noise levels impressively low due to the 'DWA ROUTING technology'. Enjoy your music with a level of clarity and realism that mirrors a live performance, where every detail is heard just as the artist intended.

High-Power THX Certified Amplification

At the heart of the K9 AKM's headphone amp performance is the dual THX AAA 788+, providing ample power to drive even the most demanding headphones. Whether you prefer the nuanced detail of high-impedance studio cans or the deep bass of modern headphones, the K9's dual amplifier design ensures a balanced, distortion-free experience. It's capable of delivering up to 2000mW of power at 32Ω or up to 780mW at 300Ω, making it versatile for any listening scenario.

Wireless Freedom with Hi-Res Support

Embrace the convenience of wireless without compromising on quality. The K9 AKM features advanced Bluetooth 5.1 technology, incorporating the Qualcomm QCC5124 chip for high-resolution audio streaming via codecs including LDAC, aptX HD, and aptX Adaptive amongst others, allowing for a sublime wireless listening experience with minimal latency. Moreover, the FiiO Control App connectivity elevates your control, offering a suite of customisation and PEQ options at your fingertips.

Tailored Listening with Gain Switch

The FiiO K9 AKM features a front-panel gain switch, offering three levels: High, Medium, Low. This allows you to match the amplifier's output with the sensitivity of your headphones, ensuring optimal performance whether you're using in-ear monitors or robust over-ear headphones for a customised listening experience.

Versatile Output Modes for Every Need

Choose from three output modes on the K9 AKM: Line Out, Preamp, and Headphone Out. Line Out provides a steady signal to your system, Preamp allows volume control for amplifiers, and Headphone Out caters to personal listening across various outputs, including 6.35mm, 4.4mm, and XLR-4 headphones.

Flexible Orientation and Control

Designed to be versatile, the K9 AKM comes with a stand and can sit horizontally or vertically to fit into your space. It boasts a weighty, precision volume knob with RGB lighting that provides visual feedback and 120 levels of volume adjustment for the utmost control over your audio.

Key Features

  • AKM AK4191EQ + AK4499EX DACs for superior sound quality
  • Dual THX AAA 788+ amplifiers for reliable power and low noise
  • Qualcomm Bluetooth 5.1 with LDAC, aptX Adaptive, and more hi-res codec support
  • FiiO Control App lets customise the K9's sound profiles via Bluetooth
  • Separate analogue and digital circuits to improve SNR
  • Supports up to 768kHz/32bit and DSD512
  • Multiple high-fidelity connection outputs, including balanced 4.4mm and XLR-4 headphones
  • Supports UAC1.0 and UAC2.0 modes
  • Low noise floor for clearer audio
  • Dual-voltage transformer ensures consistent power supply
  • Comes with a stand for flexible horizontal or vertical orientation

What's in the box?

  • FiiO K9 AKM Desktop DAC and Headphone Amplifier
  • Power cord
  • Headphone adapter (6.35mm to 3.5mm)
  • USB cable
  • 6 x Feet pads
  • Fuse
  • Vertical stand tray
  • Quick start guide
  • Voltage selection card

Specifications

General

Name/Model K9 AKM
Colour Black
Weight approx. 2.66kg
Gain L/M/H
Bluetooth format indication Support
Dimensions 200x 224.5x 72mm (excluding foot pads)
Deep standby Long press the multi-function key for about 3 seconds
Bluetooth Transmitter None
Bluetooth format indicator SBC: blue, AAC: cyan, aptX HD: yellow, aptX: purple, aptX LL: purple, LDAC: white, aptX Adaptive: green
Maximum supported sampling rate 768kHz-32bit/DSD512(USB DAC)

192 kHz-24bit (coaxial)

96 KHz-24bit (fiber)
Hardware scheme DAC: AK4499EX+AK4191EQ

USB decoding: XUF208

Bluetooth: QCC5124

LPF: 2 x OPA1612

Volume IC: 2 x NJU72315

AMP: 2 x THX AAA788+

Transformer: linear transformer
Volume control type Analog Potentiometer (ADC sampling)
Channel balance L12 to R12 (0.5dB per stage)
FiiO control Support
Sample rate indication Support
Firmware upgrade System firmware upgrades through USB, Bluetooth firmware upgrades through FIIO Control
Low power reminder None
Bluetooth reception (5.1) AAC/SBC/aptX/aptX LL/aptX HD/LDAC/aptX Adaptive
Adapted impedance PO:8~150Ω

BAL:8~350Ω

Keys and Interfaces

Key Solid key + toggle switch
Single-ended input interface RCA Socket
Digital fibre input interface Optical fibre socket
Balancing output interface 4.4mm socket

XLR4 balanced socket
Balancing line output interface XLR3 balance socket
USB 1 x USB B

1 x USB C
Balancing line input interface 4.4mm balance socket
Digital coaxial input interface RCA socket
Headphone output interface Standard 6.35mm socket
Single-ended line output interface RCA Socket

Power Parameters

Power supply AC 100-120V ~/AC 220-240V ~ (recommended)

Audio Parameters

Single-ended Line Output Performance

Distortion plus noise < 0.00027% (1kHz-0.7dB@10kΩ)
Channel separation ≥112dB (1kHz@10kΩ)
Frequency response 20Hz-50kHz; damping < -3.5dB
Signal-to-noise ratio ≥119dB (A-weighted)
Bottom noise < 2.9μV (A-weighted)
Line Output Level 2.3Vrms (1kHz@10kΩ)

Balanced Line Output Performance

Distortion plus noise < 0.00020% (1kHz-1dB@10kΩ)
Channel separation ≥122dB (1kHz@10kΩ)
Frequency response 20Hz-50kHz; damping < -3.5dB
Signal-to-noise ratio ≥128dB (A-weighted)
Bottom noise < 1.9μV (A-weighted)
Line Output Level 4.7Vrms (1kHz@10kΩ)

Headphone Output Performance (6.35mm)

Output power 1 L+R≥1000mW+1000mW (16Ω, THD+N < 1%, AUX/UAC/SPDIF/BT IN)
Output power 2 L+R≥1500mW+1500mW (32Ω, THD+N < 1%, AUX/UAC/SPDIF/BT IN)
Output power 3 L+R≥200mW+200mW (300Ω, THD+N < 1%, AUX IN)
Bottom noise < 3.0μV (A-weighted)
Frequency response 20Hz–50kHz; damping < -3.5dB
Output impedance < 1Ω (32Ω)
Channel separation ≥76dB (1kHz@32Ω)
Distortion plus noise 21Vp-p

Balanced Headphone Output Performance (4.4mm/XLR4)

Output power 1 L+R≥1000mW+1000mW (16Ω, THD+N < 1%, AUX/UAC/SPDIF/BT IN)
Output power 2 L+R≥2000mW+2000mW (32Ω, THD+N < 1%, AUX/UAC/SPDIF/BT IN)
Output power 3 L+R≥780mW+780mW (300Ω, THD+N < 1%, AUX IN)
Bottom noise < 5.2μV (A-weighted)
Frequency response 20Hz–50kHz; damping < -3.5dB
Output impedance < 1Ω (32Ω)
Channel separation ≥116dB (1kHz@32Ω)
Distortion plus noise 42Vp-p

Product code

Product code FIIOK9-AKM

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