The FiiO X3 8GB Mastering Quality Music Player is a pocket-sized audio player with a built-in WOLFSON WM8740 DAC chip and an AD8397 amplifier chip that supports up to 300mA output and warm A-class amplifier quality. The player supports five lossless audio formats including APE, FLAC, ALAC, WMA and WAV. Plus, it also features master copy class audio playback.

The player has 8GB of flash memory and the microSD card slot supports up to 64GB of memory expansion. It offers multiple digital and analog audio output options as well. The built-in rechargeable battery recharges via USB and provides up to 10 hours of continuous playback. The player is also equipped with a 2.4" TFT color display and adjustable circuit hardware for bass and treble controls.

Supports Five Main Lossless Music Formats: The X3 supports APE, FLAC, ALAC, WMA and WAV music formats. This should ensure that music lovers won't have to be bothered with incompatible formats since even the Apple-exclusive ALAC format is supported
HD Music at Master Copy Class: The X3 can support master copy music at 192kHz/24-bit for high-quality HD music enjoyment
Lightweight & Portable Design: With compact dimensions and a weight of only 4.3 oz (122 g), the X3 is ultra-portable so you can enjoy your music anywhere
10 Hours of Playback Time & Standard USB Smart Charging: The X3's built-in 3.7V lithium polymer battery has a 3000mAh capacity that guarantees up to 10 hours of playback time per charge. And, once you get the firmware version 1.0 upgrade, the device should support 12-15 hours of playback
High-Quality DAC Chip: The X3 doesn't use the DAC function of its main controller chip. Instead, it features a professional WOLFSON WM8740 DAC chip, which has been used in the Hi-Fi REGA Saturn CD player. It's also used in other Hi-Fi audio players from Sony and Astell&Kern
High Dynamic & Current Output Amplifier: Similarly to the DAC chip, the X3 doesn't use the amplifier function of the main controller chip. Instead, it employs a separate AD8397 amplifier chip, which has high current output power. When boosting headphones at 16Ohm, the output power can run upto 300mA
Bass & Treble Adjustable Circuit Hardware: While most portable music players use DSP technology and software to adjust audio settings for bass and treble, the X3 uses bass and treble adjustable circuit hardware resulting from analogous circuits
Born Specifically for Music Appreciation: Although the X3 is powerful enough to run an Android operating system, it is made solely for music enjoyment. This means that there is no video playing or picture displaying function
Multiple Output Options: The X3 includes a headphone jack, a line out audio jack and a digital coaxial audio output. This allows you to use the device as an HD music player or as an analog signal source to boost headphones after connecting to an amplifier
Display & Exterior Design: The X3 features a 2.4" color TFT LCD screen with 320 x 240 resolution. The player also features an aluminum alloy cover with a button trim panel, a plastic shell and buttons with a metal CD grain
Memory & Expandable Memory: The X3 has 8GB of internal storage capacity with the actual available space closer to 7.8GB. This can be expanded by up to 64GB when you use the microSD card slot
Independent Charging Indicator: The double charge indicator features a red light that indicates the device is charging and a green light that signals the X3 is fully charged. The unit's display features a battery gauge indicator as well
APE format supports 192kHz/24-bit audio maximum and 96kHz/24-bit normal and high levels
Supports USB 2.0 high-speed data transmission with read/write speeds up to 4.5Mb/s
Supports song playing according to all files, folder, name of album, artists and genre
Playing modes include random, order, single cycle and repeat all
Breakpoint Memory will start playing songs from exactly where they were last switched off
Song settings support delete local lyric and custom favorite listing
Sleep mode supports auto turn-off when sleeping at selectable time frames
CUE support for auto track, playing by section and fast forward/rewind
Album cover, theme renewal, lyrics and ID3 information will display when available
X3 offers 60 levels of digital volume control as well as custom volume settings
Delete current file function available
When charging with 1.5A USB, current shouldn't be more than 1300mA for 3 hours of charge time

FiiO X3 Specifications

Display Screen	TFT 320 x 240
Analog audio output jack	3.5mm headphone output jack
Digital audio output jack	3.5mm headphone output jack
USB DAC	Supports 192K/24B
Phone out(PO)	3.5mm headphone output jack
Headphone Impedance Range	16-300Ohm
Volume control type	60 levels digital volume control mode
Bass Boost	-10 dB-+10 dB
Treble	-10 dB-+10 dB
Left right channel adjustment	5 dB
Gain selection	0/6 dB
Line output THD+N	< 0.004% at 1KHz
Line output Frequency Response	10Hz-20KHz(+/-0.2)
Line output Crosstalk	> 90 dB at 10KOhm at 1KHz
Line output SNR	> 108 dB (A-Weight )
Dynamic range	> 103dB
Line output Level	> 1.7 Vrms
Output Power 1	> 540 mW at 16Ohm
Output Power2	> 270 mW at 32Ohm
Output Power	> 30 mW at 300Ohm
Phone out Frequency Response	10Hz-20KHz(+/-0.2)
Phone out SNR	> 105 dB (AUX IN)
Output Impedance	<0.3Ohm
Phone out Crosstalk	>75 dB at 1KHz
Phone out THD+N	< 0.005% at 1KHz
MAX output voltage	> 8 Vp-p
MAX output current	> 250 mA
Power	USB 5V/500mA recommend: USB 5V 1.5A
Charge display	Red light indicates, green light turns on after fully charged
Battery display	Yes
Battery Capacity	3000 mAh
Battery Life	>10 Hours (firmware un-upgrated)
Dimensions	55 x 109 x 16mm (2.2 x 4.3 x 0.6")
Weight	122g (4.3oz)

The device's first charge shouldn't exceed 750mA and it will take about 5 hours