D5 decoder uses ES9018K2M decoder The chip has a dynamic range of 127dB and produces sound Very full and transparent, so everyone loves it very much D5 adopts JRC5532DD dual operational amplifier. D5 adopts QCC3034 Bluetooth module and supports -HD.-HD transmission protocol high fidelity, high efficiency, and high stability. Featuring transparent , stylish andirresistible. Non destructive volume adjustment - Adopting multi-level volume adjustment, Can solve the distortion of left and right channels, Crosstalk and noise interference, Greatly improved 3D The feeling and fidelity of music. D5 Input signal - BT PC OPT COA BT: Connect your phone's Bluetooth signal PC: Connect the computer using a USB cable OPT: Use fiber optic cables to connect CD/DVD/TV COA: Use fiber optic cables to connect CD/DVD/TV Colour:White Material:Metal Package Contents: 1 * Digital Audio Decoder 1 * Remote Control 1 * Type C Cable 1 * English instruction manual 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.