FiiO E17K

FiiO E17K
USB DAC Headphone Amplifier


Product Highlights

  • Standard Mini USB Interface
  • 3.5mm Line and S/PDIF Inputs
  • 3.5mm Stereo Headphone Jack
  • Gain, Balance, and Tone Controls
  • 18-pin Docking Interface
  • OLED Display
  • Rechargeable Lithium Ion battery


See Overview, Technical Data and Comparison below.


  • The E17 USB DAC Headphone Amplifier is a compact device that improves the sound quality on just about any device. The amplifier has a mini USB interface which allows you to connect a computer to provide audio decoding out of any computer.

    S/PDIF in Supports 192k/24-bit

    Standard 3.5mm line and S/PDIF inputs let you connect analog line and digital PCM sound sources, such as MP3 players, smartphones, tablets, and more.

    A function for every occasion

    Using a mini USB, the E17 lets you connect the Amp to a computer for digital audio decoding. The Amp has gain, balance, and tone controls to adjust the device for your specific tastes.

    Compact size with no compromise

    With such a compact size, the E17 does not compromise offering up to 15 hours of operation time and recharges in just 3.5 hours.


  • Model /Number: ALPEN2/ E17K
    Weight: 110 g
    Dimensions: 104.1 x 62.2 x 12.8 (mm)
    Battery Capacity: >1500 mAh
    Battery Life: >15hours
    Charging Time:  <220 mins
    Audio Input: MicroUSB, COAXIAL, OPTICAL 3.5mm jack
    Volume Control: Digital Volume Control (0-60)
    Drive Ability: 16~150Ω
    Output Power: > 220mW@32 Ω/>290 mW@16 Ω
    THD: <0.003%@1KHz
    Frequency Response: 10Hz~500KHz@32 Ω
    Input Sensitivity: 0/6/12dB=2.25V/1.125V/565mV
    Crosstalk: >75 dB@1KHz
    Gain: 0/6/12dB
    MAX Output Voltage: >7.8 Vp-p
    Colour Available: Black
    Headphone Output: 3.5 mm stereo jack
    Bass boost: Yes
    Power input: USB 5V/500mA
    Output Impedance:  <0.3 Ω
    Signal to Noise Ratio: > 110 dB (AUX IN)
    Max Input Level: > 4 Vrms
    Channel Imbalance:  <0.5 dB
    Bass Boost Range: -10dB~+10dB
    Max Output Current: >80 mA

    Frequency Response diagram of curves

    Test condition:
    Aux Input: 200 mV, TREBLE=OFF, BASS=ON
    Red curve: Left channel; Blue curve: Right channel; Magenta curve: Left channel


    Frequency Response diagram of curves

    Test condition:
    Aux Input: 200 mV, TREBLE=ON, BASS=OFF
    Red curve: Left channel; Blue curve: Right channel; Blue curve: Left channel


    Distortion diagram of curves

    Test condition:
    Input: 200mV, Load: 32 Ω
    Red curve: Left channel; Blue curve: Right channel


  • Model NameQ1K1E10KALPEN 2-E17K
    General Specifications
    Color AvailableBlackTitaniumBlackBlack
    Dimensions97 x 56 x 13.1 (mm)50 x 0.8 x 0.3 (mm)49.1 mm×80 mm×21 mm104.1 x 62.2 x 12.8 (mm)
    Weight100 g11.3 g78 g110 g
    Analog Audio inputMicro USBMicro USBMicro USB3.5 mm stereo Jack
    Digital Audio inputN/AN/AN/AMicro USB/Coaxial/3.5 mm jack(COAXIAL adapter attached)
    Headphone output3.5 mm Stereo Jack3.5 mm Stereo Jack3.5 mm Stereo Jack3.5 mm Stereo Jack
    Line Output3.5 mm Stereo JackN/A3.5 mm Stereo JackDock(Micro USB)/3.5 mm Line Out port
    Headphone Impedance Range16~150 Ω16 to 100 Ω16~150 Ω16~150 Ω
    Volume ControlTOCOS Potentiometer N/AALPS Potentiometer Digital Volume Control (0-60)
    Bass Adjust0/5 dBN/AYESYES
    Treble AdjustN/AN/AN/AYES
    Balance AdjustN/AN/AN/A5 dB
    GAIN Control-7dB/4.5dB (AUX IN)
    -3.5dB/8dB (USB IN)
    Line Out BypassYESN/AN/AYES
    Audio Performance (DAC Section)
    USB Sample Rate Support32/44.1/48/96 kHz (16/24 bit) Max 96kHz/24bit supportedN/A32/44.1/48/96 kHz (16/32 bit)
    DSD 2.8 MHz Supported
    SPDIF Sample Rate SupportN/AN/AN/A32/44.1/48/96/192 kHz (16/24 bit)
    THD+N<0.0045% (10 kΩ/1 kHz) (LO) <0.01% (1 kHz)<0.006% (1 kHz)<0.003% (1 kHz)
    SNR≥107dB ≥100dB>105 dB >110 dB
    Dynamic Range>95 dB N/AN/A>102 dB
    Line Out Level>1.48 Vrms N/AN/A>1.5 Vrms
    Output Power1>190 mW (32 Ω/THD+N<1%) >75 mW(16Ω/THD+N<1%)200 mW (32 Ω/THD+N<1%)> 220 mW (32 Ω)
    Output Power2>75 mW (150 Ω/THD+N<1%) >35 mW(32Ω/THD+N<1%)N/A>290 mW (16 Ω)
    Frequency Response20 Hz~20 kHz20 Hz~20 kHz20 Hz~20 kHz20 Hz~20 kHz
    Output impedance<0.3 Ω ≤ 1 Ω<1.04 Ω <0.3 Ω
    Crosstalk≥75dB (1 kHz) ≥70 dB (1 kHz)≥70 dB (1 kHz)>75 dB (1 kHz)
    MAX GainN/A1.2 dB1.6 dB (GAIN=L)
    8.8 dB (GAIN=H)
    >12 dB
    Peak Output Voltage7.2 Vp-p3.25 Vp-p7.39 Vp-p>7.8 Vp-p
    MAX output Current>75 mA 35.93 mA81.6 mA>115 mA
    Input Overload4.3 Vrms N/AN/A4 Vrms
    Power and Battery
    Power/ChargerRecommend DC5V 1AUSB on PCrecommend DC5V 500mARecommended DC5V 1A
    Charging DisplayYESN/AN/AYES
    Battery Level displayN/AN/AN/AYES
    Capacity1400 mAhN/AN/A1500 mAh
    Charge Time>30 h N/AN/A>15 h
    Battery Life≤4 h N/AN/A≤ 220 min