FiiO K17 Desktop DAC & Headphone Amplifier

Features

1. Professional-Grade Audio Processing with 31-Band PEQ

• Equipped with an M21586Q DSP chip capable of 64-bit floating-point processing at 360MHz

• Features 31-band high-precision lossless PEQ with ±24dB gain adjustment and Q value from 0.4 to 128

• Supports dynamic range compression/expansion, limiter, and compressor without sample rate conversion (up to 96kHz)

• Compatible with Windows, macOS, and future app control (via firmware update)

2. Discrete Class AB Headphone Amplifier

• Fully discrete OP+transistor amplifier design

• ON Semiconductor MJE243/253 transistors deliver high current and low output impedance

• Output power: 4000mW + 4000mW (balanced) – nearly double that of the K9 Pro ESS

• Smooth, natural sound that drives both IEMs and high-impedance headphones

3. Flagship Dual AKM DAC Chips

• Built with AK4191 + Dual AK4499EX DACs for flagship-level decoding

• 8-channel to 4-channel LPF architecture provides lower interference and higher dynamics

• Analog/digital domain separation and DWA Routing deliver clean, high-resolution output

4. Eight Versatile Operating Modes

• USB DAC: XMOS XU316 supports 768kHz/32bit, DSD512, MQA

• Streaming Receiver: Supports AirPlay and Roon Ready (in certification)

• Bluetooth DAC: Qualcomm QCC5125 supports LDAC, aptX HD, aptX Adaptive

• Local Playback: USB-A input supports flash drives and portable HDDs

• Optical/Coaxial Inputs: High-resolution digital input support

• Balanced/Single-Ended Line In: Analog input with full amp processing

5. Fully Balanced Audio Architecture

• End-to-end differential circuit design from DAC to headphone amp

• Enhanced signal integrity via OPA1612 precision op-amps

• Significantly reduces crosstalk and boosts dynamic range

6. Advanced Internal Design for Signal Purity

• Separate circuit boards for power, analog, and digital sections

• Audio signals transmitted using silver-plated oxygen-free copper cables

7. Precision Power Supply System

• 35W low-noise linear power supply with custom transformer

• Five 4700μF capacitors for energy storage

• Independent digital and analog power supplies reduce interference

• Multi-stage power regulation with TPA7A47/7A33 LDOs

8. Ultra-Low Jitter Clock System

• 3 Accusilicon femtosecond crystal oscillators (AS318-L, AS318-Pro)

• Delivers precise clocking for jitter-free audio

9. Premium Audiophile Components

• 4 Nichicon, 4 ELNA MILIC II, and 6 ELNA RA3 capacitors

• 8 Panasonic film capacitors and 32 wafer resistors

• NEUTRIK gold-plated connectors for long-lasting performance

10. Dual-Core Processing for Smooth Performance

• X2000 processor: Dual CPUs with dedicated low-power core

• ESP32-S3 SoC: 240MHz dual-core for responsive UI and low power draw

11. Retro-Inspired Yet Modern Design

• Design blends square and circle elements for visual balance

• Includes multiple physical knobs for easy control

• Optimized grid structure for efficient heat dissipation

12. Multiple Control Options

• 3.93-inch LCD touchscreen for intuitive navigation

• Five knobs for volume, gain, and function control

• IR remote included for wireless operation

13. Intelligent Protection Systems

• Built-in temperature, DC output, overload, and overcurrent protection for safe usage

14. Always Connected – Wired & Wireless

• Supports Gigabit Ethernet and dual-band Wi-Fi (2.4G/5G)

• Seamlessly integrates with Roon, AirPlay, and USB storage for playback

15. Flexible Listening Scenarios

• Ideal for PC, NAS, iPad, DAPs, USB drives, and more

• Simultaneous output to headphones and active/passive speakers

What’s in the Box

• K17 unit

• AC power cord

• USB data cable

• Headphone plug adapter

• Remote control

• Fuse

• XLR4 plug cover

• Batteries (region dependent)

• Warranty card

• Quick start guide