FiiO K1

The FiiO K1 is a compact portable USB DAC headphone amplifier that connects via the USB port on your computer, functioning as an external sound card. The professional audio components ensure a worry-free music listening experience at an excellent sound level. The FiiO K1 is incredibly easy to use with its Plug & Play feature; it has no battery and does not need to be charged. Drivers also do not need to be installed. Simply plug it into your computer, connect your headphones, and you will immediately enjoy a significantly improved sound quality.

Summary:
Portable headphone amplifier for computers | Sandblasted aluminum housing with removable clip for attachment | Plug & Play | Audio input: micro USB | Headphone output: 3.5 mm | Texas Instruments PCM5102 DAC chip | Savitech SA9023A USB receiver | TPA61332A headphone driver | Supported audio resolution: up to 96 kHz / 24 Bit | Headphone impedance: 16 Ohm - 100 Ohm (recommended) | Output power: >75 mW (16 Ohm/THD+N<1%) / >35 mW (32 Ohm/THD+N<1%) | Total harmonic distortion: <0.01% (1 kHz) | Output impedance: < 1 Ohm | Frequency range: 20 Hz - 20 kHz | Signal-to-noise ratio: ≥ 100 dB | Crosstalk: ≥ 70 dB (1 kHz) | Channel imbalance: 0.3 dB | Gain: 1.2 dB | Dimensions: 50 x 20.5 x 8 mm | Weight: 11.3 grams.