QCS6490 based on the same architecture as Snapdragon 778G |

8GB RAM + 256G storage |  Dual microSD card slots | Dual ES9039SPRO DAC

Coaxial and optical outputs | 5000mW+5000mW desktop-grade power |

QCC5181 lossless Bluetooth + XMOS 16-core XU316 | 31-band PEQ+AUTO

Brand-new high-capacity FPGA+RIVER femtosecond crystal oscillators |

EQ 9200mAh high-temperature resistant battery

Portable Hi-Res Smart Music Player

Continuing the M17’s design concept of a “Portable Desktop Unit,” We have spent four years creating a reference-grade portable smart HiFi music player. With cutting-edge specs and performance, a desktop-grade architecture and interfaces, and a balanced yet authoritative sound, it sets a new benchmark among all digital music players.

Reference-grade portable smart HiFi music player Completely enhanced, in a class of its own

Not only does the M27 come standard with 8GB RAM and 256GB storage, but the dual microSD card slots are also back, offering fast and consistent read/write speeds. Combined with the new- generation processor, you can effortlessly access and manage your vast collection of music anytime, anywhere.

Dual microSD card slots Unlocking your music library

*Data comes from the FIIO labs and is subject to variation in real-world usage. Actual results may vary depending on the environment and conditions.

In addition to the common outputs found on portable devices, it is uniquely equipped with a 6.35mm headphone jack, coaxial input and output ports, and an optical output port. This level of connectivity and compatibility goes well beyond what is typically found on portable devices, greatly enhancing its integration with desktop systems.

Portable + Desktop ports

A new generation of crossover devices

End-to-end lossless audio Pure enjoyment in any setting

Bluetooth 5.4, supports various codecs including aptX Lossless and LDAC.

Bluetooth 5.4, supports various codecs including aptX Lossless and LDAC.

Extremely high dynamic range and ultra-low distortion ensure accurate reproduction of sound details, delivering rich and clear sound. The device features two dual-channel, ultra-low-noise ES9312 regulators working in conjunction with the two ES9039SPRO chips. This setup uses four independent power supplies, each dedicated to one of the four differential modules, resulting in enhanced dynamic range and ultra-low noise.

Two ESS ES9039SPRO

8-channel flagship DACs

Five hardware gain levels Unrivalled 5000mW output power

With marked improvements in output power and voltage at every gain setting and impedance, the device delivers a superb sonic experience with all IEMs and over-ear headphones. Plug in a fast charger via the dedicated power port to engage the Ultra High Gain Mode, unleashing a massive 5000mW+5000mW of output power, allowing the M27 to easily handle even the most demanding dynamic musical passages.

HYPER DRIVE: FIIO’s proprietary super drive amp circuit, featuring ultra-large power reserves, ultra-low-impedance circuits, rapid copper block heat dissipation, and ultra- low-loss relay switching throughout the signal path.

Supports 35W fast charging via the QC3.0, QC4.0, PD2.0 and PD3.0 PPS fast charging protocols.

Seamless battery protection through hardware and software

*Data comes from the FIIO labs and is subject to variation in real-world usage. Actual results may vary depending on the environment and conditions.

9200mAh safe high-voltage battery

6th generation proprietary

Digital Audio Purification System (DAPS)

New high-capacity FPGA + Dual RIVER femtosecond crystal oscillators

FIIO’s latest generation of its proprietary DAPS system introduces a newly developed high-capacity FPGA and dual high-performance femtosecond crystal oscillators. This combination delivers ultra-high precision and ultra-low jitter digital signal transmission, resulting in exceptionally pure and clear sound.

31-band high-precision lossless PEQ

AUTO EQ, for even greater convenience

This digital music player is the first to globally support a 31-band high-precision PEQ. Utilizing FIIO’s proprietary algorithms and interface, it allows for fine-tuned sound customization. This lets you simulate or correct a headphone’s frequency response curve to perfectly match your personal sonic taste.

Is manual fine-tuning too complex? AUTO EQ and sound presets make it easy to get started. AUTO EQ enables diverse sonic experiences—just upload or select your headphone's original data and your desired target curve. It also includes various built-in sound effects like Pop and Jazz, plus a specially tuned “FX17 Relaxed Sound” EQ designed just for the FX17 – giving it a richer, more enjoyable high-fidelity sound.

The six-stage fully differential audio circuit, built to full-size desktop standards, effectively displays audio dynamics, lowers crosstalk, and ensures signal stability and integrity to accurately render every last detail within the music.

Desktop-class audio architecture Meticulously designed circuit

End-to-end audiophile components Precisely tuned for rich musicality

Two NJU72315 electronic volume control chips

Two TI OPA2211 op-amps optimized for musicality

Dual relays for lossless signal transmission

8 ELNA audio capacitors

20 RUBYCON film capacitors

Over 50 low-noise, low- temperature drift film resistors

Desktop-grade power supply

Reference-level sound

Separate power supplies for digital and analog sections

Minimizes crosstalk between analog and digital sections for pinpoint digital accuracy and purer analog output, giving the audio performance a more robust foundation.

Highly efficient cooling inside and out Consistently cool high performance

High-efficiency 3D cooling system

A graphite vapor chamber and graphene thermal conduction pads are integrated into a seamless metal chassis. This design quickly and evenly transfers heat away, guaranteeing powerful, long-lasting performance.

Officially customized accessories

For both portable and desktop usage

Heat-dissipating authentic leather case

The case features a built-in cooling gel/ice pack film for active heat dissipation. Together with a stainless-steel hollow-out design, it ensures highly efficient heat dissipation while maintaining a premium tactile feel.

Multifunctional cooling stand DK1 PLUS

The stand is packed with multiple ports with USB Audio support. Thanks to the cooling fan, you can use the device while charging with greater peace of mind and comfort.

A revolutionary multi-generational upgrade has led to an explosive leap in performance. With the A78 large core clocked up to 2.7GHz, the system operates with unparalleled fluidity. It can easily manage multi-tasking and smoothly run all popular video and audio services.

QCS6490 based on the same

architecture as Snapdragon 778G

Multi-generational leap

The device maintains a bold, modern design while also being a pioneer in incorporating avant-garde aesthetics.

Continuity and evolution A leading pioneer

Crafted from premium TC4 titanium alloy, with a hardness approximately four times that of aluminum alloy. After 13 hours of CNC precision machining and an additional hour of meticulous polishing, it offers enhanced wear resistance, corrosion resistance, and refined aesthetics, making the entire unit more durable against scratches and abrasions, while exuding a high-end and luxurious feel.

Titanium excellence

A perfect balance of texture and touch

① Power and Lock button/Volume knob

② 6.35mm headphone out/line out

③ 4.4mm balanced headphone out/line out

④ 3.5mm headphone out/line out

⑤ Previous track

⑥ Play/Pause

⑦ Next track

⑧ Multifunction button

⑨ Side ambient light

⑩ Antenna

⑪ microSD card slot

⑫ Optical out port

⑬ Type-C charging/power supply port

⑭ HOLD switch

⑮ Type-C data/charging port

⑯ Desktop mode switch

⑰ USB HOST port

⑱ Coaxial in/out port

Ports and Buttons Diagram

①------------------------------------------------------------M27*1

②------Tempered glass screen protector(pre-installed)*1

③----Protective leather case (put on device at factory)*1

④-------------------------------------------------Storage case*1

⑤--------------------------------------------Quick start guide*1

⑥----------------------------------------------------Ejector pin*1

⑦---------------------------USB-A male to Type-C adapter*1

⑧-----------------Type-C to Type-C charging/data cable*1

⑨------------------------------------------------Warranty card*1

⑩----------------------------------------------GPL V2 manual*1

⑪--------------------DK1 PLUS stand fan charging cable*1

⑫-----------------------------------------------Cleaning cloth*1

⑬--------------------------------------------DK1 PLUS stand*1

Packing List

Basic specifications

Construction material: Aluminum alloy/Titanium alloy

Dimensions: About 157.4x85.1x28mm

Weight: About 556g (aluminum alloy), About 630g (titanium alloy)

RAM: 8GB ROM: 256GB (approximately 241GB usable)

Storage expansion: Two microSD card slots, theoretically supporting up to 4TB (2TB per card)

Hardware configurations

Main SoC: Qualcomm

Dragonwing QCS6490

DAC: ES9039SPRO*2

USB: XMOS XU316

Bluetooth: QCC5181

Display: 5.99-inch (1080x2160) fully laminated

Battery capacity: 9200mAh

Bluetooth specifications

Bluetooth reception: Bluetooth 5.4, SBC/AAC/aptX/aptX Lossless/aptX HD/ aptX Adaptive/LDAC

Bluetooth transmission: Bluetooth 5.2, SBC/AAC/aptX/aptX HD/aptX Adaptive/ LDAC/LHDC

Decoding specifications

Local playback: 768kHz/32bit; DSD512 (Native)

USB DAC: 768kHz/32bit; DSD512 (Native)

USB Audio: 768kHz/32bit; DSD512 (supports DoP/D2P/Native)

Coaxial output: 384kHz/24bit; DSD128 (DoP/D2P)

Optical output: 192kHz/24bit

Coaxial decoding: 192kHz/24bit

Headphone output

Balanced output power 1: L+R≥5000mW+5000mW（32Ω, THD+N＜1%, 12.7Vrms, Ultra high gain mode)

Balanced output power 2: L+R≥2250mW+2250mW（32Ω, THD+N＜1%, 8.5Vrms, Super high gain mode)

Balanced output power 3: L+R≥805mW+805mW（300Ω, THD+N＜1%, 15.5Vrms, Ultra high gain mode)

Balanced output power 4: L+R≥320mW+320mW（300Ω , THD+N＜1%, 9.8Vrms, Super high gain mode)

Single-ended output power 1: L+R≥1800mW+1800mW（32Ω, THD+N＜1%, 7.6Vrms, Ultra high gain mode)

Single-ended output power 2: L+R≥660mW+660mW（32Ω, THD+N＜1%, 4.6Vrms, Super high gain mode)

Single-ended output power 3: L+R≥200mW+200mW（300Ω, THD+N＜1%, 7.8Vrms, Ultra high gain mode)

Single-ended output power 4: L+R≥80mW+80mW（300Ω , THD+N＜1%, 4.9Vrms, Super high gain mode)

Balanced LO audio specifications

Frequency response: 20Hz~85kHz: Attenuation＜2.1dB

SNR: ≥127dB (A-weighted)

Noise floor: ＜1.9μV (A-weighted)

THD+N: 0.0027% (1kHz/-5dB@32Ω)

Crosstalk: ≥107dB

Line output level: 4.2Vrms (1kHz@10kΩ)

Basic specifications and parameters

Removable battery pack

The battery can be removed and swapped, alleviating concerns about long-term battery degradation.

*The battery pack is not sold separately. If replacement is needed, please contact your local distributor.

Patented desktop mode

The battery is bypassed when used in this mode, allowing you to not worry about constant battery wear from high power output. This efficiently cuts down on the number of charge/ discharge cycles and thus prolongs battery lifespan.

Patent number: ZL202321946664.8

Multiple dust protection plugs

The optical/RCA/6.35mm ports come with dust protection plugs already pre-applied at the factory.

Custom Yaoli linen storage bag

Dual-layer, multi-compartment storage provides attentive protection. It securely holds your gear, allowing you to just pack up and go.

40W high-capacity reserve power conversion circuit

65A high-current, MOSFET low-loss managed power path

Massive energy storage capacitors

Distributed copper heat sinks

The copper heatsinks effectively reduce the internal resistance rapidly transferring localized heat away. This ensures the headphone amplifier circuit operates consistently at peak performance.

22mm ultra-large knob

Orderly and functional port locations

Dazzling studio-like RGB lighting

Fiberglass backplate with marble magma texture

5.99-inch 1080P display | 5th-generation Corning Gorilla Glass

TC4 titanium alloy version