Features:● Use high quality chip to improve the quality of the sound, including: DIR9001, PCM1793, OPA2134.● Input interface: Coaxial, optical port, available for the computers with coaxial optical port, LCD TV, CD, DVD, MD etc.● For output, it uses in-line package OPA2134, you can change the timbre by changing integrated circuit.● Built-in head phone amplifier, it can help you to make the sound of your devices louder.● Italian AV capacitance gives it High Resolution - Introduction and makes its sound very clear.● The VIMA capacitance is made of metallized polypropylene which makes its sound luxuriant.● Incoming frequency: 44.1, 48, 96KHz / 16 / 24bit.● Distortion factor: Below 1KHzpersentage 0.0006.● Frequency response: 20 - 20KHz（- 0.2dB）.● Signal to noise ratio: Less than 113dB.● Rated output: 1.7VPP. Package weight: 0.538 kg Product Size(L x W x H): 13.00 x 7.50 x 3.50 cm / 5.12 x 2.95 x 1.38 inches Package Size(L x W x H): 21.00 x 16.50 x 6.00 cm / 8.27 x 6.5 x 2.36 inches Package Contents: 1 x Decoder, 1 x Power Adapter, 1 x Power Cable, 1 x Bilingual User Manual in English and Chinese