Fiio K5 Desktop Headphone Amplifier with FiiO X3-II Portable Player

• 2 inputs available: AUX IN and FiiO dock input
• High-quality Alps sealed audio potentiometer
• Voltage amplification / buffer 2-stage amplification circuit
• High efficiency, well regulated, low noise power transformer for exceptional transient response
• Expandable docking function

FiiO X3 Portable Player for APE FLAC ALAC WMA WAV (2nd Generation)

All-new digital audio architecture

JZ4760B+ SA2000+CS4398, natively supporting DSD, decoding SACD ISOs directly, also supporting lossless formats WAV, FLAC, APE, WMA, ALAC, AIFF, etc.

Dual crystal oscillators

Dual crystal oscillators dedicated to multiples of 44.1 and 48kHz respectively, ensuring lowest jitter and highest precision for playback of music at all sample rates and eliminating all conversion artifacts.

Audiophile-grade architecture and components

Utilizing Cirrus Logic's top-flight CS4398 DAC coupled with FiiO's painstakingly tuned low-pass filter, the X3 realizes extremely low noise and phase distortion; also utilizing premium tantalum capacitors in the analog circuit for minimum internal resistance for the best uncolored sound. 

Further improved USB DAC function

Supporting up to 192 kHz/ 24 bit audio as well as DSD playback*

+ASIO driver installation required for windows computers (plug-and-play on Macs)

*via DSD plugin on windows computers

Supporting CTIA standard inline remotes on earphones (Apple, Samsung, etc.)

10-band EQ, and user defined playlists (.m3u/m3u8)

All new power management features

Supporting hibernation mode (power consumption <5mA) for instant-on playback; coulomb meter integrated in battery for accurate battery % readings. Power button flush with chassis avoids accidental activation while remaining easy to press; volume+ button includes tactile marker for easy operation even in your pocket

Better build quality than ever

With all-metal chassis and high reflectance fine-grain faceplate bringing fit and finish to another level. Unique titanium color brings fresh appearance to a FiiO product.

All new UI (user interface) design

With classic scroll wheel operation; six unique UI themes to choose from

Complete set of ports

Standard 3.5mm headphone out and composite coaxial / line out port for connection to external amps / DACs etc., standard micro USB 2.0 for charging and data transfer, and for docking to future FiiO equipment. 

Micro SD card slot

Supports the largest current cards (currently 128GB)

*Approximately 3200 losless songs of various formats (44.1 kHz/ 16-bit, 4 min, 40 MB)

Full set of accessories available

Matching leatherette case / cover, clear protective case, stacking kit for external amps / DACs, line out cable, etc.

Features

• Firmware upgrade: via micro SD card (formatted in FAT32 via the X3)

• Data transfer: Micro USB 2.0 high speed

• Song playback: Supporting browsing and playback via folders, all songs, albums, artists, genres, favorites, and playlists

• Play mode: Sequential / shuffle / loop single / loop all

• Resume after power off: Can resume from last song or last position before poweroff

• Library management: Supports adding and managing favorites, playlists on paper; supports deleting favorites, playlists, songs and folders on player; supports batch deletion

• Hibernation: Player can automatically enter hibernation for instant wakeup / playback with minimal battery drain

• Screen saver: Custom defined screen timeout time

• CUE sheet supported: Supports splitting songs by CUE sheets and skipping through tracks within cuesheet

• Themes: 6 different built-in themes

• Playback display: Supporting embedded / external / folder-based album art, lyrics and ID3 display

• Gapless playback: Supported

• Volume control: 120 steps digital potentiometer

• Output protection: Power supply safety control over analog circuit

• Gain setting: Switchable between high and low gain

• Equalizer: 10 band equalizer (+6dB)

• Hearing protection: Customizable max volume setting to protect hearing

• Balance: Max bias 5dB L/R, in 0.5dB increments

• On / off transients: Output relay prevents on / off transients

• Headphone detection: Playback pauses on headphone disconnection

• Internal battery: 2600 mAh 3.7V Li-polymer

• Charging current: 450 mA via computer USB port (charging time approx. 8 h)

• Play time: >11h 

• Chips used: SoC: JZ4760B; DAC: CS4398; LPF: OPA1642; OP: OPA1642+LMH6643

Packaging and Accessories