FiiO K17

FiiO K17 - the next generation desktop decoding headphone amplifier. K17 skillfully combines retro elegance and cutting-edge technology, featuring a unique design and rich functionality all wrapped in a powerful package.  

FIIO K17 is not only the upgraded successor to the K9 Pro, it explores new boundaries for a high-end desktop DAC and headphone amplifier. High end components combined with new levels of creativity!

FiiO K17 Touchscreen Control

SCREEN: The 4" touchscreen features uber popular VU-Meters, large clear controls for the unit as well as quick access to the amazing EQ Presets. 

DAC: The K17 features the flagship AKM DAC chip combination -AK4191 + Dual AK4499EX. Two AK4499EX chips are used, one to handle each channel. The 8-channel to 4-channel LPF design reduces common mode interference, resulting in better channel separation and dynamics. 

FiiO K17 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.

New Powerful Headphone Amp

AMP: FiiO K17 is FiiO's first implementation of a discrete amplifier circuit for headphones. This discrete circuit is of an OP+ transistor current amplification design, equipped with the classic pair of ON Semiconductor MJE243/253 transistors.

FiiO K17 is capable of producing high current with low output impedance, perfect for hard to drive planar headphones. The result is up to 4000mW + 4000mW output power in balanced mode, nearly double that of the K9 Pro ESS. This allows it to easily drive various kinds of headphones and IEMs and to produce smooth, pleasant, and natural sound.

K17 Extensive Parametric EQ Control

EQ: K17's built in EQ is a substantial design. K17 features an M21586Q DSP chip, capable of double-precision 64-bit floating-point calculations and runs at a high 360MHz clock frequency. This EQ chip is complemented by a high-performance ES9821Q ADC & 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 Parametric EQ. K17's PEQ is designed to ensure the audio signal is still of the highest fidelity even after being processed.

Fine adjustments of audio parameters are 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 to use the PEQ and correct or simulate various frequency response curves of different headphones to dial in the audio exactly the way you want to hear it. 

July 2025: Firmware Update adds 3 new UI themes, VU meter option in all display modes!

Suggestion: For an ideal headphone to match with the K17, we suggest the FiiO FT7.

FiiO K17 Features & Design: 

• Fully balanced design
• 3 ultra-low phase noise femtosecond crystal oscillators
• 35W low-frequency low-noise linear power supply
• Infrared remote
• 2.4G/5G WIFI + Gigabit Ethernet support
• Streaming media receiver capable
• Local file playback capable
• 31 Band Parametric EQ (unlimited adjustments when connected to PC)
• 3.9" Touchscreen
• BAL 4.4mm & XLR headphone out
• RCA & XLR Line output
• Roon Ready, Airplay, local file playback

FiiO K17 Tech Specs: 

• DAC: 2 x  AKM AK4499EQ decoding chips
• Digital inputs: USB-C (front),  Ethernet, USB-A (data), Dual Band Wifi, BT 5.1, Coax, Optical
• Analog input: 4.4mm BAL, RCA L/R, 
• Analog output: RCA L/R, XLR L/R
• Headphone amp gain: Low / Med / High / Super / Ultra
• Headphone output: SE 3.5mm, BAL 4.4mm, XLR
• Output Impedance: 1 ohm
• Headphone Power SE: 1850mW @ 32 Ohm / 240 mW @ 300 ohm
• Headphone Power BAL: 4000mW @ 32 ohms / 950mW @ 300 ohm
• Peak Output Voltage: 48 Vp/p 
• THD: 0.00049%
• SNR: 124dB
• Rear ground selector switch
• 3.5mm Trigger port
• Weight: 2.75 kg
• Size: 24 x 21 x 6.7 cm

Warranty: 1 Year by FiiO Canada