Premium Audiophile Grade High Performance Lossless Digital Media Music Player

We apologize

This item has been discontinued

Get FAST answers from customers ASK a Question See questions answers

This is an Open Box Item

We have checked, tested, and confirmed this item to function properly. It contains all the same parts as a new unit, but shows some visible signs of use.
This open box product has a 30-day return policy and a 90-day warranty

One Small Step for your Eyes, One Giant Leap for your Ears.

All New Fiio X5 2nd gen Portable High Resolution Music Player

FiiO X5 II

Good Sound Comes from a Quality Power Supply

14V power supply for best power in class, up 40% from last generation X5

To improve sound quality, the all-new X5 employs seamless voltage switching between different gain levels. At high gain, the working voltage reaches 14V (±7V), 40% higher than the 1st gen X5, putting the opamps in their best working voltage, greatly increasing dynamics. At low gain, the working voltage is adjusted to ±5V, reducing power consumption, increasing runtime.

FiiO X5 II

Only the Best Parts

Synergistic combination of flagship components

The all-new X5 preserves the top-flight PCM1792A from Texas Instruments, coupled with the new OPA1652, with great dynamic performance and FET inputs for I/V conversion, realizing extra-low distortion (0.00005%) and noise. Also utilizing two top-flight OPA1612 for lowpass filtering and voltage amplification for extra-low distortion (0.000015%) and noise (1.1 nV/ ) . Finally, to attain sufficient driving current for wide-soundstage, highly-dynamic musical performance, and good bass power, the headphone output stage employs two BUF634U for current buffering, supplying up to 250mA current output (67% improvement over X5 1st gen).

FiiO X5 II

From Off to On in 0 Seconds Flat

Deep-sleep standby for instant-on music in everyday use

On the basis of the X5, we applied the newest technology from the likes of smartphones onto the all-new X5. Through the engineers’ efforts, the all-new X5 successfully reduced standby power consumption to <5mA, so that it may remain in standby for about 4 weeks from a full battery

FiiO X5 II

Lighter, Smaller, more Ergonomic

Portability is key

As a portable product, “portability” is always an important criterion to strive for. Through our engineers’ efforts, we packed the above-mentioned more advanced and complex circuitry into a 15% lighter, 12% smaller package than the X5 1st gen.

FiiO X5 II

User Customization

10-Band EG and User Display Themes

The all-new X5 also supports 10-EQ and user-defined playlist(.m3u/m3u8), and can switch between 5 different display themes on the same firmware.

FiiO X5 II

Item Condition: Open Box Complete

  • Item has been installed, used, and has box damage
    • Headphone Port: Standard 3.5mm Headphone Port
    • Volume Control: 120 step digital potentiometer
    • Weight: 5.82 oz (165 g)
    • Equalizer: 10-band equalizer (±6dB)
    • Display Screen: 2.4", 262,144 color HD IPS screen with 400x360 pixels
    • Line Out: Standard 3.5mm Port (Shared line out / S/PDIF coaxial out)
    • Digital Out (Coaxial): Standard 3.5mm Port (Shared line out / S/PDIF coaxial out)
    • Balance: 10 dB
    • USB DAC: Supporting up to 24bit / 192kHz and DSD (driver installation required)
    • Gain: 3.6dB (Gain=L) // 9.1dB (Gain=H)
    • Color: Titanium
    • Drive Ability: 16~150 ohms
    • Dimensions: 109 mm x 63.5 mm x 15.3 mm
    • Authorized Internet Dealer
    • 1-year Manufacturer's Warranty

    Partial Performance Parameters for Headphone Output:

    • Output Power 1: >245 mW (32 ohms / THD+N<1%)
    • Output Power 2: >436 mW (16 ohms / THD+N<1%)
    • Output Power 3: >27 mW (300 ohms / THD+N<1%)
    • Output Impedance: < 0.2 ohms (32 ohms)
    • Crosstalk: >75 dB (1 kHz)
    • THD+N: <0.001% (1 kHz)
    • Frequency Response: 20 Hz~20 kHz
    • MAX Output Voltage: >8.2 Vp-p
    • SNR: ≥ 117 dB (A-weighted)
    • MAX Output Current: >250 mA (For reference)

    Power and Battery:

    • Power: DC5V 2A recommended
    • Battery Capacity: 3300 mAh
    • Charge Display: Red light indicates , green light turns on after fully charged
    • Battery Life: >10 h (32 ohms ; normal volume with display off )
    • Battery Display: Yes (Accurate battery % readings)
    • Charging Time: <4h (DC5V 2A)

    Audio Formats Supported:

    • Lossless:
      • DSD: DSD64, DSD128 (.iso&.dsf & .dff)
      • APE(Fast): 192 kHz / 24 bit
      • APE(Normal): 96 kHz / 24 bit
      • APE (High): 96 kHz / 24 bit
      • AIFF: 192 kHz / 24 bit
      • FLAC: 192 kHz / 24 bit
      • WAV: 192 kHz / 64 bit
      • WMA Lossless: 96 kHz / 24 bit
      • Apple Lossless: 192 kHz / 24 bit
    • Lossy compression:
      • MP2, MP3, AAC, ALAC, WMA, OGG
    Also Found As: Fiio-X5 II

    General Features

    Primary Color
    This is the main color of the item.
    Dark Gray
    Memory Type
    The type of memory the item uses.
    Power Source
    The type of battery the item uses. Some batteries are rechargeable, while others are not.

    Rechargeable alkaline, nickel cadmium, nickel metal hydride, lithium ion, and lithium ion polymer are all examples of rechargeable batteries.

    Some batteries are integrated and built into the item, while others are removable.

    Battery Life (Audio)
    The average length that the unit will play audio on one battery charge.
    10 hours
    Recharge Time
    The amount of time it takes to recharge the batteries.
    4 hours
    Connection Type
    How the unit is connected to its source to send and receive information and data.

    On some items such as wire or cables, this specifies how the cables connect to transfer the signals.

    1/8" Stereo Jack
    Video Playback
    This item is capable of playing videos.
    The width of the item from left to right (side-to-side) measured in inches.
    The height of the item, measured from top to bottom, in inches.
    The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

    Display and Controls

    Screen Size
    The screen size dimension is measured diagonally in inches.
    Screen Type
    The type of technology used to produce the screen images. LCD, DLP, Plasma, LCoS, and CRT are the most common. 2 newer technologies include LED and OLED which use light-emitting diodes (LEDs) as a backlight, as opposed to conventional LCD TVs, which use cold-cathode fluorescent lamps (CCFL) for a backlight.
    Resolution (pixels)
    A display's pixel resolution defines its ability to resolve fine details. Digital TVs and projectors measure screen resolution in pixels. The higher the resolution, the more detailed the picture will be.
    400 x 360 
    If a unit is touchscreen capable, you can control a majority of it's functions by touching the screen.
    Control Type
    This is the method in which the unit is controlled.
    Selection Wheel and Buttons
    Button Lock
    Button Lock is a feature that will lock all of the buttons so they do not accidentally get pushed.
    ID3 Tagging
    An ID3 tag is most commonly used in conjunction with MP3 audio files. The ID3 tag allows the title, artist, album, track number, and other information to be displayed.

    Audio Playback

    The unit offers MP3 playback.

    MP3 should not be confused with MPEG-3. MP3 files are the third audio layer of a MPEG-1 file. The compression algorithm of a MP3 file reduces the file size while keeping the audio quality.

    The unit offers the playback of WMA files.

    WMA stands for Windows Media Audio and was developed by Microsoft. It is a file used specifically for audio.

    The unit will play AAC files.

    The audio compression AAC stands for Advanced Audio Coding. They generally tend to have better sound quality than most MP3 files.


    Extra Features

    Memory Card Reader
    Whether or not the receiver has a built-in input for removable memory cards such as SD (Secure Digital) cards or MMC (Multimedia) cards.

    Warranty and Return Policy

    Parts Warranty Duration
    1 year
    Labor Warranty Duration
    1 year
    Warranty Provider

    Summary of Customer Ratings & Reviews

    Rating Distribution

    5 Star
    4 Star
    3 Star
    2 Star
    1 Star

    Average Attribution Rating

    Browse 3 questions and 2 answers
    Hide answersShow all answers | Sort by
    Why did you choose this?
    Sonic Electronix Store
    Good sound in a such a small package. Great value for money.
    Vishnu S on Oct 21, 2015
    Can you download music from your iTunes library?
    A shopper on Jul 11, 2016
    Best Answer: The player will handle any format, just drag and drop onto the player which appears as a drive on your computer.
    Reply · Report · JERRY G on Jul 11, 2016
    · Add Answer · I Have This Question Too (0)
    Is there AM / FM radio in the X5 ll ?
    A shopper on Aug 29, 2016
    · Add Answer · I Have This Question Too (0)

    Product Summary


    Model Number




    Internal SKU


    Internal Product ID


    Sonic Electronix Wiring Guide

    Wiring Diagram Legend

    Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

    Product Name: FiiO X5 II (OPEN BOX COMPLETE)