The module can be installed in the power amplifier to expand the power amplifier input interface, connect the PC or TV box digital output interface with optical fiber or coaxial. Digital signal transmission can effectively reduce interference noise and improve sound quality. Using the solution 8416+4344, better sound quality than ordinary audio decoding 24-BIT D/A [Support 16-24 BIT] Sample rate 192K [Supports 44.1K 48K 96K 192K] Functional description: Optical fiber and coaxial digital signal input [optical fiber priority] Output stereo audio signal 0.65VA [with mute function] Supply power input:+4.2V to +12V Colour:black Material:plastic Package Contents: 1 * Digital decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.