General

• FiiO
• Material: CNC aluminum alloy
• Line output: (1) 3.5 mm port (shared with S/PDIF output)
• Digital output: (1) x 3.5 mm port (optical and coaxial, shared with line output)
• Headphone output: (1) x 3.5 mm port
• USB DAC: Supports up to 24-bit / 192 kHz
• Drive ability: 16 to approximately 150 Ohms (headphone output), 16 to approximately 300 Ohms (balanced output)
• Volume control: 120-step digital potentiometer
• Equalizer: 10-band EQ with ±6 dB boost / attenuation; 9 presets, 1 custom preset, and VIPER effect
• Balance control: 10 dB
• Gain control: Low/high
• Internal memory: 64 GB
• External memory: 512 GB (2 x 256 GB)
• Chipset: SoC: Quad-core Cortex A9 Rockship RK3188
• DAC: ES9028PRO
• LPF: 2 x OPA1612
• OP: Customized OPA926x2 (AM3A)
• Controls: Physical buttons, touch screen, volume wheel (on side)
• Font sizes: Adjustable
• In-Line controls: Supports most headphones with in-line control over play/pause, previous/next, volume up/down; does not support in-line volume control from Apple AirPods
• Wi-Fi: 5GHz / 2.4GHz, IEEE802.11 b/g/n standards
• Bluetooth: Supports Bluetooth v4.1 and aptX
• Firmware upgrade: Supports OTA upgrade and manual upgrade via internal memory or Micro SD card
• Display: IPS TFT touchscreen, 480 x 800 pixels, 4 in / 10.1 cm
• Dimensions: 5.07 x 2.65 x 0.61 in (128.7 x 67.2 x 15.5 mm)
• Weight: 7.48 oz (212 g)

Line Output

• THD+N: < 0.0008% (1 kHz/10 kOhms)
• Frequency response: 5 Hz to approximately 70 kHz(-3 dB)
• Crosstalk: ≥ 103 dB (1 kHz)
• SNR: ≥ 119 dB (A-weighted)
• Dynamic Range: > 114 dB
• Line Output Level: > 1.8 Vrms (10 kOhms / 1 kHz)

Headphone Output

• Output Power 1: ≥ 200 mW(16 Ohms / THD+N <1%, using AM3A Amp Module)
• Output Power 2: ≥ 150 mW(32 Ohms / THD+N <1%, using AM3A Amp Module)
• Output Power 3: ≥ 17 mW(300 Ohms / THD+N <1%, using AM3A Amp Module)
• Frequency response: 6 Hz to approximately 60 kHz (-3 dB, using AM3A Amp Module)
• Signal to noise ratio: ≥ 116 dB (A-weighted, using AM3A amp module)
• Output impedance: < 1.2 Ohms (32 Ohms loaded, using AM3A Amp Module)
• Crosstalk: ≥ 73 dB (1 kHz, using AM3A amp module)
• THD+N: < 0.003% (1 kHz, using AM3A amp module)
• Max output voltage: > 6 V p-p (using AM3A amp module)
• Max output current: > 150 mA (for reference, using AM3A amp module)
• Drive ability: 16 to approximately 150 Ohms (using AM3A amp module)

Balanced Analog Outputs

• Connection: (1) 2.5 mm
• Output Power 1: ≥ 380 mW(16 Ohms / THD+N <1%)
• Output Power 2: ≥ 400 mW(32 Ohms / THD+N <1%)
• Output Power 3: ≥ 63 mW(300 Ohms / THD+N <1%)
• Frequency response (-3 dB): 6 Hz to approximately 60 kHz
• Signal to noise ratio: ≥ 119 dB (A-weighted)
• Output impedance: < 1.7 Ohms (32 Ohms loaded)
• Crosstalk: ≥ 97 dB (1 kHz)
• THD+N: < 0.003% (1 kHz)
• Max output voltage: > 10 V p-p
• Max output current: > 150 mA (for reference)
• Drive ability: 16 to approximately 300 Ohms

Power

• Power: 12 VDC / 1.5 A, 9 VDC / 2 A, 5 VDC / 2 A
• Quick charge: Yes
• Battery charge display: Via LCD display and pulse LED, battery level shown in percentage
• Battery capacity: 3800 mAh
• Battery life (approx.): > 10 hours (3.5 mm headphone output), >8 hours (2.5 mm TRRS balanced output)
• Charging time: < 100 minutes(12 VDC/1.5 A, quick charge), < 2.5 hours(5 VDC/2 A, normal charge)

Supported Audio Formats

• Lossless formats: <DSD: DSD64 / 128(ISO and DSF)
• DXD: 352.8 kHz
• APE FAST / High / Normal: Up to 384 kHz / 24-bit
• APE Extra High: Up to 192 kHz / 24-bit
• APE Insane: Up to 96 kHz / 24-bit
• Apple Lossless: Up to 384 kHz / 32-bit
• AIFF: Up to 384 kHz / 32-bit
• FLAC: Up to 384 kHz / 32-bit
• WAV: Up to 384 kHz / 64-bit
• WMA Lossless: 96 kHz / 24-bit
• Lossy Formats: MP3, AAC, WMA, OGG

• Micro USB cable
• Coaxial digital adaptor cable 
• Tempered glass screen protector (already applied)
• Clear case
• Ejector pin
• decorative strip
• Leatherette case
• Quick start guide