FiiO K9 Desktop DAC & Headphone Amplifier
In stock
Features
| Headphone Socket | No |
|---|---|
| Brand Color | None |
| Warranty The length of time your product is protected by warranty | 1 Year |
| Product Type | Other |
Tech Specs
- Size and Weight
- Dimensions - 200mm x 224.5mm x 72mm
- Weight - 2660g
- General
- Hardware Scheme - DAC: AK4499EX+AK4191EQ, USB decoding: XUF208, Bluetooth: QCC5124, LPF: OPA1612 x2, Volume IC: NJU72315 x2, AMP: THX AAA788+ x2, transformer: linear transformer
- Volume Control Type - Analog Potentiometer (ADC sampling)
- Channel Balance - L12 to R12 (0.5dB per stage)
- Gain - L/M/H
- FiiO Control - Supported
- Bluetooth format indication - Supported
- Sample Rate Indication - Supported
- Firmware Upgrade - System firmware upgrades through USB, Bluetooth firmware upgrades through FIIO Control
- Deep Standby - Long press the multi-function key for about 3 seconds
- Low Power Reminder - None
- Bluetooth Transmitter - None
- Bluetooth reception (5.1) - AAC/SBC/aptX/aptX LL/aptX HD/LDAC/atpX Adaptive
- Bluetooth format indicator - SBC: blue, AAC: cyan, aptX HD: yellow, aptX: purple, aptX LL: purple, LDAC: white, atpX Adaptive: green
- Maximum supported sampling rate - 768kHz-32bit/DSD512(USB DAC)
- 192 kHz-24bit (coaxial)
- 96 KHz-24bit (fiber)
- Adapted impedance - PO:8~150Ω
- BAL:8~350Ω
- Keys and Interfaces
- Key - Solid key + toggle switch
- USB - USB B x1, Type-C x1
- Single-ended input interface - RCA Socket
- Balancing Line Input Interface - 4.4mm balance socket
- Digital Fiber Input Interface - Optical fiber socket
- Digital Coaxial Input Interface - RCA socket
- Balancing output interface - 4.4mm socket, XLR4 balanced socket
- Headphone output interface - Standard 6.35mm socket
- Balancing line output interface - XLR3 balance socket
- Single-ended line output interface - RCA Socket
- Power
- Power supply - AC 100-120V ~/AC 220-240V ~ (recommended)
- Battery Capacity - N/A
- Audio
- Some performance parameters of single-ended line output
- Distortion plus noise - <0.00027% (1kHz/-0.7dB@10kΩ)
- Signal-to-noise ratio - ≥119dB (A-weighted)
- Channel separation - ≥112dB (1kHz@10kΩ)
- Bottom noise - <2.9μV (A-weighted)
- Frequency response - 20Hz~50kHz: damping <-3.5dB
- Line Output Level - 2.3Vrms (1kHz@10kΩ)
- Performance Parameters of Balanced Line Output
- Distortion plus noise - <0.00020% (1kHz/-1dB@10kΩ)
- Signal-to-noise ratio - ≥128dB (A-weighted)
- Channel separation - ≥122dB (1kHz@10kΩ)
- Bottom noise - <1.9μV (A-weighted)
- Frequency response - 20Hz~50kHz: damping <-3.5dB
- Line Output Level - 4.7Vrms (1kHz@10kΩ)
- Headset Output Part Performance Parameters (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)
- Output impedance - <1Ω (32Ω)
- Channel separation - ≥76dB (1kHz@32Ω)
- Distortion plus noise - <0.00026% (1kHz/-1.3dB@32Ω)
- Bottom noise - <3.0μV (A-weighted)
- Signal-to-noise ratio - ≥127dB (A-weighted)
- Frequency response - 20Hz~50kHz: damping <-3.5dB
- Peak output voltage - >21Vp-p
- Balanced headphone output part performance parameters (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)
- Output impedance - <1Ω (32Ω)
- Channel separation - ≥116dB (1kHz@32Ω)
- Distortion plus noise - <0.00029% (1kHz/-9.5dB@32Ω)
- Bottom noise - <5.2μV (A-weighted)
- Signal-to-noise ratio - ≥124dB (A-weighted)
- Frequency response - 20Hz~50kHz: damping <-3.5dB
- Peak output voltage - >42Vp-p
Description
The FiiO K9 Desktop DAC & Headphone Amplifier is engineered to elevate your audio experience to unprecedented heights. At its core, it features dual ES9068AS DACs that deliver an immersive listening experience. This high-performance setup ensures that every note is reproduced with precision, allowing you to fully engage with your favorite playlists.
Whether you're diving into classical symphonies or exploring contemporary tracks, the K9's exceptional sound quality brings your music to life. With its powerful capabilities, this device promises to transform every listening session into a soul-stirring event.
Power and Performance in Perfect Harmony
The K9 boasts a remarkable THX AAA 788+ amplifier, providing an impressive output of up to 780mW at 300Ω and 2000mW at 32Ω with less than 1% distortion. This ensures that both low- and high-impedance headphones are driven effortlessly, offering an engaging and dynamic soundstage.
The dual DAC architecture enhances the listening experience, refining sound quality to create an emotional connection with the music. With the K9, every headphone becomes a high-fidelity portal to your favorite tracks, delivering a performance that resonates deeply and beautifully with your ears.
Balanced Design for Optimal Sound Integrity
The K9 features a fully balanced design that minimizes crosstalk and maximizes sound authenticity. Each component, from the DAC to the volume control, is designed to work in harmony, preserving the integrity of the audio signal.
The partitioned PCB layout ensures that the power supply, signal paths, and analog loops are kept separate, promoting optimal performance across all audio sections. This meticulous attention to design results in a rich, detailed sound that captures the essence of each musical piece. The K9 is not just an amplifier; it’s a finely tuned instrument for audio enthusiasts.
Robust Power Supply for Reliable Performance
A robust linear transformer powers the K9, supported by four large 4700uF capacitors that deliver continuous, clean energy. This dual power supply isolates digital and analog sections, significantly reducing interference and ensuring pure sound reproduction.
The careful regulation of voltage through multiple ultra-low-noise LDOs guarantees a stable power source, contributing to the K9’s exceptional sound quality. This thoughtful engineering allows you to enjoy high-fidelity audio without interruptions, making the K9 a reliable companion for all your listening needs.
Versatile Connectivity for All Your Devices
The FiiO K9 is designed with versatility in mind, featuring multiple input options such as USB, optical, coaxial, and RCA. This array of inputs allows seamless connections to various devices, making it adaptable for any audio setup. The K9 also supports Bluetooth connectivity, providing high-resolution audio streaming via LDAC, aptX HD, and other advanced formats.
Users can easily switch between input modes and outputs, including 6.35mm and 4.4mm balanced connections, ensuring a tailored audio experience. This flexibility makes the K9 an ideal choice for audiophiles who demand the best in versatility and sound quality.
Advanced Features for Personalized Listening
Equipped with RGB indicator lights and a precise volume control knob, the K9 enhances both functionality and aesthetic appeal. The innovative FiiO Control app allows users to customize settings, including equalization and filter options, for a personalized audio experience.
This comprehensive app provides access to seven music tuning styles and three user-defined parametric equalizers. Additionally, the K9 incorporates intelligent protection systems to prevent overheating and overload, ensuring safe operation during prolonged use. With its advanced features, the K9 is designed to provide a worry-free listening experience while adapting to your unique preferences.
Understanding the Variants: Standard, AKM, and Pro Editions
The FiiO K9 comes in three distinct variants: Standard, AKM, and Pro editions, each tailored to different audio needs. The Standard edition features the dual ES9068AS DACs and THX AAA 788+ amplifier, delivering exceptional sound quality for general use.
The AKM edition utilizes AKM’s high-performance DAC technology, offering a warmer tonal character that is ideal for those who prefer a more analog-like sound. Finally, the Pro edition enhances connectivity and supports additional high-resolution audio formats, making it suitable for the most discerning audiophiles.
Each variant caters to specific listening preferences, ensuring that there’s a K9 model for every type of music lover.








































