FiiO K9 AKM

Desktop DAC and headphone amplifier
AK4191EQ + AK4499EX digital analog converter
USB-C port on the right side of the device
THX AAA 788+ Amplifier
Dual-mode clock management
QCC5124 Bluetooth -Support for LDAC/aptX Adaptive and other high-resolution Bluetooth formats
App connectivity
Fully symmetrical design
Linear dual-voltage transformer (separate analog and digital power supplies)
Various inputs and outputs

Powerful dual cores - For thrilling sound
AK4191EQ + AK4499EX DACs manage the left and right channels and form the high-quality heart of the FiiO K9 AKM. Listen to your favorite playlist and immerse yourself in the music instantly.

High-quality amplifier - Refreshingly powerful
The ace up the sleeve of the FiiO K9 AKM is the THX AAA 788+ amplifier, which gives it exceptional undistorted output power of up to 780 mW at 300 ohms and up to 2000 mW at 32 ohms. Whether you're using low-impedance or high-impedance headphones, the K9 will drive them with ease.

Precisely designed - Perfectly balanced design - Music for your ears
From the DAC to the volume control to the amplification, every part of the FiiO K9 AKM is truly balanced to reduce crosstalk and achieve authentic sound.

Split design - For maximum performance of each section
The K9 AKM's circuit board features a partitioned layout that completely separates the key areas of the audio circuit—the power supply, the signals, and the analog signal loop. This ensures the integrity of the audio signal being processed.

Six-stage audio circuit - True-to-original sound reproduction
The six-stage desktop-quality audio circuitry has been carefully engineered to ensure pure, refined, yet rich sound. I/V conversion, LPF filter, digital volume control, buffer amplifier, preamplifier, and post-amplifier

Electricity is the mother of sound - Robust power supply - Abundant power
The linear transformer is paired with 4 massive 4700uF capacitors to deliver clean continuous power.

Isolated power supply for digital and analog sections
For purer sound The digital and analog parts of the K9 AKM are powered separately to reduce interference between the two audio circuits and ensure a pure and faithful reproduction of your music.

Multiple LDOs in multiple stages - Truly stable performance
Power stabilization and filtering within the audio circuit plays a major role in ensuring excellent sound quality. Ultra-low-noise LDOs are used for voltage regulation in each stage of the audio circuit.

Dual-mode clock management - Even more sound improvement
Thanks to precise and stable dual-mode clock management, the FiiO K9 AKM can reproduce high-resolution audio with the highest fidelity, as if you were there with the artists. * Supports up to 768kHz/32bit PCM and DSD512 

High-resolution Bluetooth - Meets all your audiovisual needs
The FiiO K9 uses the QCC5124 Bluetooth chip with support for LDAC/aptX HD/aptX Adaptive and other high-resolution Bluetooth formats. With the K9 AKM, you can listen to music, watch videos, and play video games with high quality and low latency. *Bluetooth 5.1, supported formats: LDAC/aptX Adaptive/aptX/aptX HD/aptX LL/AAC/SBC

Compatible with UAC1.0/UAC2.0 - Highly adaptable
The K9 supports both UAC 1.0 and UAC 2.0 modes, allowing you to use the K9 with either plug-and-play devices or devices that can work with the K9 with an additional driver for even greater compatibility. And with the FiiO Control app, you can easily switch between UAC 1.0 and UAC 2.0 modes. *UAC 1.0 for PS5 and other devices supported

Product specifications
DAC: AK4191EQ + AK4499EX
Decoder chip: XMOS XUF 208
Amplifier: Two THX AAA 788+
Bluetooth chip: QCC5124, Bluetooth 5.1 Supported Bluetooth formats: LDAC/aptX Adaptive/aptX HD/aptX/aptX LL/AAC/SBC
Outputs: 6.35mm/4.4mm/XLR-4/RCA/XLR
Inputs: USB/OPT/COAX/RCA/4.4mm
Output power 1: L+R≥2000mW+2000mW (32Ω balanced/THD+N1%)
Output power 2: L+R≥780mW+780mW (300Ω balanced/THD+N1%) SNR: ≥124dB (A-weighted, UAC)
Noise floor: PO4.8μV (A-weighted, UAC); BAL9.3μV (A-weighted, UAC)
Output impedance: 1Ω (32Ω load)
Weight: Approx. 2660g
Dimensions: 200x224.5x72mm (without feet)

Extensive accessories:
1x K9, 1x power cable, 1x headphone jack adapter, 1x USB data cable, 6x adhesive feet, 1x micro fuse, 1x stand, 1x quick start guide