FiiO K17: Where Cutting-Edge Technology Meets Retro Design

The FiiO K17 is FiiO’s next-generation amplifier/DAC, designed to deliver exceptional performance in a desktop format. With a unique combination of retro elegance and state-of-the-art technology, this device aims to set the benchmark for those who demand the highest audio quality in their headphones.

More than just an updated successor to the K9 Pro, the K17 explores new possibilities in high-fidelity audio reproduction, designed to maximize performance even for the most demanding headphones.

Exploring new frontiers Symphony of retro elegance and modern technology

This is the next generation desktop decoding headphone amplifier, aiming to be a unique and excellent performer. It is a symphony of retro elegance and cutting-edge technology, featuring a unique design and rich functionality all wrapped in a powerful package. The FIIO K17 is not only the upgraded successor to the K9 Pro, it is also an exploration of new possibilities for a high-end desktop DAC and headphone amplifier.

A mixing console for desktop HiFi Specialty chips for specialty uses Exceptionally strong

The K17 features an M21586Q DSP chip which is capable of double- precision 64-bit floating-point calculations, and runs at high 380MHz clock frequency. This chip is complemented by a high-performance ES9821Q ADC as well as a specially customized ultra-low phase noise femtosecond crystal oscillator. These three components allow the user, in all modes, to utilize the 31-band high-precision lossless PEQ. The PEQ is designed to ensure the audio signal is still of high fidelity even after being processed. The chip also allows for robust output protection functionality, ensuring that headphones and other connected audio equipment ara fully protected

Exceptional Power and Performance

Inside, the FiiO K17 integrates a powerful M21586Q DSP chip, capable of executing 64-bit double-precision floating-point calculations, running at 360 MHz. This is complemented by an ES9821Q DAC and an ultra-low phase noise femtosecond crystal oscillator, specifically developed for maximum precision.

Class AB Discrete Headphone Amplifier

• One of the key features of the FiiO K17 is its discrete amplification circuit for headphones:
• Based on the classic ON Semiconductor MJE243/253 high-current transistor pair.
• Provides an output power of 4000 mW + 4000 mW in balanced mode, nearly double that of the K9 Pro ESS.
• Delivers smooth, natural, and wide sound, effortlessly driving both full-size headphones and IEMs.

AKM flagship DAC, AK4191+AK4499EX*2

In the K17 is the flagship AKM DAC chip combination – AK4191+AK4499EX*2. Two AK4499EX chips handle each channel. The 8-channel to 4-channel LPF design reduces common mode interference, resulting in better channel separation and dynamics. It also features a newly designed architecture with fully separated digital/analog portions, which also incorporates the newly developed “DWA ROUTING” technology for an even cleaner audio background and improved resolution.

Eight Operating Modes for Greater Versatility

The FiiO K17 adapts to all your needs with its eight operating modes:

USB Decoding: With 16-core XMOS XU316, supports up to 768 kHz/32-bit, DSD512, and full MQA decoding.

Optical Decoding: Receives digital audio signals via the optical connection for subsequent amplification.

Single-ended Line Input: Processes and amplifies analog signals.

Streaming Receiver: Compatible with Roon Ready and AirPlay for easy and wireless music streaming.

Bluetooth Decoding: Powered by Qualcomm QCC5125 with Bluetooth 5.1, supporting aptX HD, aptX Adaptive, and LDAC.

Coaxial Decoding: Receives digital audio signals via coaxial input.

Balanced Line Input: Processes balanced analog signals to maximize the K17’s power.

Local Playback: Compatible with external USB storage devices and portable hard drives loaded with your music library.

31-band high-precision lossless PEQ

The K17 features an M21586Q DSP chip which is capable of double-precision 64-bit floating-point calculations, and runs at a high 360MHz clock frequency. This chip is complemented by a high-performance ES9821Q ADC as well as a specially customized ultra-low phase noise femtosecond crystal oscillator. These three components allow the user, in all modes, to utilize the 31-band high-precision lossless PEQ. The PEQ is designed to ensure the audio signal is still of high fidelity even after being processed.

When adjusting PEQ on the K17,  PCM 44.1k~96k signals can be originally processed. Fine adjustments of audio parameters are thus possible, allowing for adjustments such as a gain range of +12~-24dB and a Q value range of 0.4dB~128dB. The PEQ allows the user to simulate or correct the frequency response curve PEQ settings can be easily exported, imported, shared, and saved – making it easy for anybody to use the PEQ and correct or simulate various frequency response curves of different headphones.

Easy to use Multiple control methods