FiiO Alps E17

The FiiO Alpen E17 is a multifunctional headphone amplifier that offers many excellent features. It can be used as a DAC via USB, coaxial, or S/PDIF, or as a headphone amplifier via a 3.5 mm line-in. With its compact form, it is very handy, and its high-performance design ensures superior sound quality.

The E17 has several connectors, including USB, S/PDIF IN (digital or coaxial), and AUX-IN. Its OLED screen makes the device intuitive to use, clearly indicating the function of each button. The FiiO Alpen E17 features an integrated equalizer for bass and treble, and with the sleep function, the device can be switched off automatically after 10 to 90 minutes. The integrated rechargeable battery allows for up to 15 hours of use.

For those who want to use the FiiO Alpen both portably and stationary, the FiiO Qogir E09K desktop headphone amplifier can also be purchased. The Alpen E17 has a dock connector on the bottom, allowing it to be placed in the FiiO Qogir E09K.

This USB DAC headphone amplifier features a display and can be combined with the FiiO Qogir E09K for portable or stationary use. Connections include mini-USB input, S/PDIF-IN (coaxial/optical), 3.5 mm headphone output, 3.5 mm aux-in, and a dock connector for the FiiO Qogir E09K. Additional features include a power key, volume controls, menu key, input key, hold switch, display indicator, equalizer for bass and treble, sleep timer (adjustable from 10 to 90 minutes), gain switch for high and low impedance load, output power of 250 mW (16 Ohm) and 30 mW (300 Ohm), headphone impedance of 16 Ohm to 300 Ohm, and a distortion factor of less than 0.001% (AMP) and less than 0.007%.