VPFET Analog to Digital Audio Converter RCA to Optical with Cable 3.5mm AUX Jack Toslink and Coaxial Adapter for Soundbar. Manufacturer : VPFET. 【analog to digital audio converter】Converts RCA or 3.5mm AUX analog stereo audio signal to Digital Coaxial audio and Toslink Spdif Optical digital audio simultaneously.
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