Package Includes: 1 x VMV 2 1 x Power Adapter 1 x USB cable 1 x Disc drive 1 x Original Package SMSL VMV V2 USB HD audio decoder interface HIFI EXQUIS 32 bit / 384 KHZ DAC with Optical Headphone Analog outputs SMSL VMV V2 USB HD audio earphone amp decoder interface 32 bit / 384 KHZ The SMSL V2 is in order to upgrade your system designed for audiophiles. V2 adopted HIFI level USB CM6631A receiving chip and ES9023 decoding chip, superior performance and compatible hd format audio playback. Support LINE OUT, ,optical fiber output and headphone amplifier output, rich input interface can meet the demand of your system. Exquisite workmanship, fashionable appearance, simple operation, perfect sound quality. will bring you a noble sense of sight, hearing. Solid aluminum alloy chassis is the whole piece of solid aluminium block using high precision automatic machine tools (CNC). , Processing is complex and meticulous, the cost is extremely high.The MAC laptop is made using this process. Solid aluminum alloy chassis is currently the most commonly used to reduce electrical electromagnetic interference design, generally used in high precision industrial equipment, such as huawei communications terminal equipment. Parameters: Specification indexes: THD + N: < 0.003% Signal-to-noise ratio: > 105 db Dynamic range: > 108 db Channel separating degree: > 105 db LINE OUT level: 2 Vrms Output power amp: 32Ω 500mW@THD=0.01% 64Ω 500mW@THD=0.006% 150Ω 123mW@THD=0.003% 300Ω 133mW@THD=0.003% USB support: Windows and Mac OS x, iOS (need purchase connector), Android4.0 above (most models). Machine power consumption: < 3 w Power supply voltage: DC9V500mA Machine volume: 9.2 cm LX 12.0 cm wide X 2.3 cm high Packing size: 22 cm X 16 cm wide X 4.4 cm high Weight: 0.55 KG HIFI EXQUIS 1101017 and SMSL recommend a software: Windows + foobar2000, Mac OS + Pure Music player, mobile phone tablet please use the original machine. V2 high quality all-in-one, HD USB audio decoder using USB asynchronous transmission technology, the highest support to 32 bit / 384 KHZ, is currently the highest standards of PCM, common audio files are between 44.1-192 kHZ, V2 fully compatible. V2 high quality all-in-one, 1101017,high-definition optical output interface, sampling rate is highest support to 24 bit / 192 KHZ, common audio files are between 44.1-192 KHZ, V2 is fully compatible.Some users might ask why do decoder digital output? When V2 alpha test users’ evaluation of voice and value of 3000 RMB, it is not enough for the old audiophiles. V2 optical output can solve the problem that part of the old audiophiles’ decoders do not have the USB input. V2 high quality machine with a built-in high quality headphone amplifier, adaptive impedance: 32-600Ω. Part can be set up four types of amp gain , the user can according to your own headphones different settings and listening hobby to themselves. Specific Settings, please read the instruction manual.