Key Features
- Dual high-performance ES9068AS DACs
- THX AAA 788+ amplifier for use with low or high-impedance headphones
- Supports high-resolution 768kHz/32bit and DSD512 playback
- Qualcomm Bluetooth 5.1 QCC5124 chip supports LDAC and aptX Adaptive
- 6.35mm, and balanced 4.4mm and XLR-4 headphones outputs
FiiO K9 Desktop DAC and Headphone Amp Overview
The FiiO K9 Desktop DAC and Headphone Amplifier will be a significant, yet compact addition to your workspace, home office, or PC setup. At its core are dual ES9068AS DACs, each dedicated to a channel, ensuring a reliably accurate and expansive home audio experience. Whether you're using IEMs or over ears, the K9 uses the powerful THX AAA 788+ amplifier to make sure your headphones can perform at their best, supporting a wide range of products with minimal distortion.
FiiO has meticulously designed the K9, ensuring that each function is partitioned to maintain the purity of the signal and minimise interference between components. This attention to detail extends to its connectivity options, including advanced Bluetooth 5.1aptx Adaptive and LDAC for quality wireless playback. This amp is also complemented by the FiiO Control app, offering an intuitive way to tailor your sound preferences directly from your smartphone.
Product Ref: 294766
Full Description
View Full DescriptionHigh-Quality Dual DAC Setup
The FiiO K9 features two ES9068AS DACs, handling separate left and right audio channels. This dual-DAC setup, using audiophile-trusted ESS Sabre technology, provides you with an exceptional audio quality that captures the greater nuance of your music, allowing you to experience your favourite tracks with incredible clarity and depth.
Powerful Amplification
Built to focus on the quality of your private listening experience, the FiiO K9 uses its THX AAA 788+ amplifier to produce an impressive 2000mW of power per channel at 320 ohms and 780mW at 3000, offering a robust driving force for both low and high-impedance headphones. This means you enjoy a refreshingly capable soundstage.
Make it Smart
The latest Qualcomm Bluetooth 5.1 chip in the FiiO K9 supports an array of high-resolution audio formats. This not only allows you to enjoy music wirelessly but also ensures that videos and games are presented with minimal latency. The FiiO Control app expands the functionality of the K9 by allowing you to adjust settings such as audio filters and EQ from your phone.
Features
- The latest Qualcomm Bluetooth 5.1 for versatile streaming
- Three-level gain adjustment to match headphone impedance
- Partitioned PCB for clean audio signal processing
- Six-stage audio circuit for high-fidelity reproduction
- Isolated power supply sections for reduced interference
- Linear transformer and large capacitors for robust power
- Dual-mode clock management for precise audio playback
- Supports UAC 1.0 / UAC2.0 for hi-res device compatibility
- Customisable audio settings via FiiO Control app
- Seven preset EQs and a parametric equaliser for personalised sound
What's in the box?
- FiiO K9 Desktop DAC and Headphone Amplifier
- Power cord
- 6.35mm to 3.5mm headphone adaptor
- USB data cable
- 6 x Feet pads
- Fuse
- Vertical stand tray
- Quick start guide, warranty card, and voltage selection card
Specifications
General
| Name/Model | K9 |
|---|---|
| Colour | Black |
| Weight | Approximately 2660g |
| Gain | L/M/H |
| Bluetooth format indication | Support |
| Size | 200x 224.5x 72mm (excluding foot pads) |
| Deep Standby | Long press the multi-function key for about 3 seconds |
| Bluetooth format indicator | SBC: blue, AAC: cyan, aptX HD: yellow, aptX: purple, aptX LL: purple, LDAC: white, aptX Adaptive: green |
| The highest supported sampling rate | 768kHz-32bit/DSD512(USB DAC)192 kHz-24bit (coaxial)96 KHz-24bit (fibre) |
| Hardware | DAC: ES9068A x 2, USB: XMOS XUF208, Bluetooth: QCC5124, LPF: OPA1612 x 2, Volume IC:NU72315 x 2, AMP: THX AAA788 x 2, Transformer: Linear Transformer |
| Volume control type | Analogue potentiometer (ADC sampling) |
| Channel balance | L12 R12 (0.5dB per stage) |
| FiiO Control | Support |
| Sample rate indication | Support |
| Firmware upgrade | The system firmware and Bluetooth version can be upgraded through USB |
| Bluetooth Reception (5.1) | AAC/SBC/aptX/aptX LL/aptX HD/LDAC/aptX Adaptive |
| Adaptation impedance | 16 600 Ω |
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 | USB B |
| Balancing Line Input Interface | 4.4mm balance socket |
| Digital coaxial input interface | RCA socket |
| Headset output interface | Standard 6.35mm socket |
| Single-ended line output interface | RCA socket |
Power supply parameters
| Power supply | AC 100-120V / AC 220-240V (recommended) |
|---|
Audio parameters
Single-ended line output performance
| Distortion plus noise | <0.00026% (1kHz/10 kΩ/A weighting) |
|---|---|
| Channel separation | ≥ 111dB (1kHz/10 kΩ) |
| Frequency response | 20Hz 50kHz (-1.5dB) |
| Signal-to-noise ratio | ≥ 119dB (A weight) |
| Bottom noise | <2.9 μV(A weighting) |
| Line output level | 2.4Vrms (1kHz/10kΩ) |
Balanced line output performance
| Distortion plus noise | <0.00025% (1kHz/10 kΩ/A weighting) |
|---|---|
| Channel separation | ≥ 120dB (1kHz/10 kΩ) |
| Frequency response | 20Hz 50kHz (-1.5dB) |
| Signal-to-noise ratio | ≥ 124dB (A weight) |
| Bottom noise | <3.1 μV(A weighting) |
| Line output level | 4.8Vrms (1kHz/10kΩ) |
Headset output part performance (6.35mm)
| Output Power 1 | ≥1W(16Ω / THD+N<1%, AUX/UAC/SPDIF/BT IN) |
|---|---|
| Output Power 2 | ≥1.5W(32Ω / THD+N<1%, AUX/UAC/SPDIF/BT IN) |
| Output Power 3 | ≥200mW(300Ω / THD+N<1%, AUX IN) |
| Bottom noise | <4.8 μV(A weighting) |
| Frequency response | 20 Hz 50kHz (-1.5dB) |
| Output impedance | <1 Ω(32 Ω) |
| Channel separation | ≥ 75dB (1kHz/32 Ω) |
| Distortion plus noise | <0.00028% (1kHz/32 Ω/A weighting) |
| Signal-to-noise ratio | ≥ 124dB (A weight) |
| Peak output voltage | ≥21Vp-p |
Balance headset output performance (4.4mm/XLR4)
| Output Power 1 | ≥1W(16Ω / THD+N<1%, AUX/UAC/SPDIF/BT IN) |
|---|---|
| Output Power 2 | ≥2W(32Ω / THD+N<1%, AUX/UAC/SPDIF/BT IN) |
| Output Power 3 | ≥780mW(300Ω / THD+N<1%, AUX IN) |
| Bottom noise | <7.1 μV(UAC, gain in, maximum volume) |
| Frequency response | 20Hz 50kHz (-1.5dB) |
| Output impedance | <1 Ω(32 Ω) |
| Channel separation | ≥ 114dB (1kHz/32 Ω) |
| Distortion plus noise | 42Vp-p |
Product code
| Product code | FIIOK9-STANDARD |
|---|
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