Special Notice: 1. This DAC supports digital PCM audio format,PLS kindly set your digital audio device such as HDTV, TV BOX, or game console into PCM or LPCM audio before using, NOT support DTS Dolby AC3. 2. PCM Setting Path: Device homepage -- system setting -- image and sound -- voice setting -- digital audio output -- PCM 3. If you are connecting to Samsung or LG TV, please follow the steps below to set it up: A.Samsung TV settings path: 1)PCM format: Settings -- Sound -- Expert Settings -- Audio Format-- PCM 2)External speakers: Settings -- Sound -- Select Speaker -- Optical B.LG TV setting path: 1)PCM setting path: Menu -- All Settings -- Sound Out -- Optical -- Digital Sound Out -- PCM 2)If you need to synchronize the output of the TV speakers and fiber: Menu -- All Settings -- Sound Out -- Optical -- Internal TV Speaker + Optical 4. Power charging: USB Power Cable -- seperate 5V 1A Standard Plug -- wall socket. 5. Do Not Power Converter by plugging in USB cable into your TV directly (unstable power supply which cause buzzing noise). 6.If the volume (from DAC output) is not loud enough, -2- please connect the output of DAC with low-impedance cellphone headset, headphone amplifier, or power amplifier. 7.Not compatible with Netflix and YouTube video websites. 8.Before power on, you must turn the adjustment knob counterclockwise to minimize the volume to avoid damage to your hearing! 9.Not support USB flash disk! Introduction： This product is specially designed for professional audio signal processing,You can easily convert the digital audio signal of input of coaxial or optical interface to analog stereo audio signal of RCA interface and 3.5 mm headphone jack. The built-in professional audio amplifier chip and volume adjustment knob can directly drive the headphones and adjust volume. The product's bass adjustment function can provide powerful stereo, heavy bass effects, and create a perfect environment different from the sound field. The effect obtained is very obvious, which makes you reveled to the world of bass. Features:  One optical fiber and one coaxial input interface. Connect to DVD, HD player and other devices  One USB input, connect to computers,Doesn’t support USB disk!  One RCA output interface, connected to the power amplifier system  One channel 3.5mm audio output interface, Connected to headphones.  Eliminate the noise when there is no input signal, and automatically mute when the non-audio signal is input.  Support 192kHz 24bit sampling rate.  Support volume adjustment  Support bass adjustment  Metal shell, anti-interference Specification: Support Audio Format..............................................PCM Separating Degree(1KHZ).....................................94DB Response Frequency......................20Hz~20KHz -0.2db Signal-to-Noise Ratio(SNR)................................-100DB Total Harmonic Distortion(THD+N).....10Hz~20KHz 0.25 -0.065% Blocking Time.....................................................0.577Fs Sampling Rate.............................................32~192 KHz Bit Rate.............................................................16~24 Bit -4- Earphone output level(Adjust the bass to maximum):3V RCA output level(Adjust the bass to maximum).........9V Earphone Output Power(Adjust the bass to maximum)....................................................(32Ω)30mW Earphone Output Impedance...................................0.8Ω RCA Output Impedance..........................................450Ω Working Voltage........................................................+5V Maximum Voltage......................................................+6V Maximum Power Consumption..............................75mA Operating Temperature Range..........................-10-70℃ Storage Temperature Range...........................-60-150℃ Operating Humidity Range............10% - 80%RH(No C ondensation) Storage Humidity Range...5- 90%RH(No Condensation) Size........................................................101x95 x20 mm weight.......................................................................115g Package Contents： 1PCS........DAC Converter 1PCS........User Manual 1PCS........USB Power Cable (Optional accessories) 1PCS........5V Power Adapter (Optional accessories) 1PCS........USB DATA Cable Diagram of Interfaces：

1. Connect CD/DVD and other playback devices to the optical or coaxial interface with optical cable or coaxial cable. Connect Laptop to USB interface with USB Cable. NOTE:Don't connect USB flash disk to this USB Port. 2. Use the RCA cable or 3.5mm audio cable to connect the decoder to the audio amplifier or headphones. 3. Use the USB cable to connect the DC 5V power connector of the decoder to the power supply. 4. Use the knob to adjust the volume appropriately. 5. According to your preferences, adjust the bass component appropriately through the knob.