Welcome to the store! 1. HDMI input supports automatic switching function. The LED status indicator clearly shows the working status. 2. In audio extraction mode, digital audio (fiber and coaxial) output supports up to 192KHz audio sampling rate (LPCM2.0 format) and also supports LPCM2.0, DOLBY AC3, DTS audio format output. 3. Supports memory function during power outages. The device can record your last setting when powered off and display it immediately upon power on, reducing unnecessary duplication. 4. Supports PIP (Picture in Picture) function. You can select the input channel according to your preferred program via the remote control. 5. Converts a 3-channel HDMI signal to a 1-channel HDMI signal output. Supports 4K full HD signal input and output. 6. The function to extract and embed audio signals can be achieved by the control button on the machine or the remote control, realizing multi-use of one machine. Item Type: Audio Extractor Digital Audio Input Format: PCM2.0/Dolby AC3/DTS Digital Audio Input Sampling Frequency: 32KHz, 44.1KHZ, 48KHZ, 88.2KHZ, 96KHz Input and Output DDC Signal: 5Vp-p (TTL) Analog Audio Maximum Input/Output Voltage Range: 70Hz-16KHz Maximum Transmission Bandwidth: 300MHz Maximum Working Current: 500mA Battery Type: CR2025 Battery Capacity: 160mAh Material: Metal Gross Weight: Approx. 688g Package Size: Approx. 24x16x6cm/9.4x6.3x2.4in 1 x HDMI 3x1 Audio Embedding Device 1 x User Manual 1 x Power Adapter 1 x Remote Control Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!