5.1 and 2.1 Digital Decoder Preamplifier With Optical (toslink) Coaxial, HDMI ARC and Bluetooth Support.

Creates Stimulated Surround Sound (does not support dolby)

Input voltage - 12v to 24v

FEATURE: 1: Support one HDMI input,one Coaxial input,one Optical input, one AUX input,one USB 2.0 input. You can switch different signal sources randomy via Button or Remote. 2: Support one HDMI(ARC) output, one Optical output,one Coxial output,one 5.1ch analog audio output of RCA , all audio output simultaneously. PS：Please use 19-core standard HDMI cable 3: All signal source(HDMI/ARC/COXIAL/OPTICAL/PC-USB/USB) can decode to 5.1ch output,it is audio decoder system. 4:All signal source(HDMI/ARC/COXIAL/OPTICAL/PC-USB) but USB player can convert to COXIAL/OPTICAL output,it is S/PDIF Switcher system. 6: HD815BT Support Bluetooth 5.0 audio receiver. 8: Support 5.1ch/2.0ch output mode,FL/FR active when 2.0ch output mode. 9: Support Button or IR remote switch input source. 10：Supporting IR adjust VOLOME 11: The power-off memory function, automatically switch to the last used signal channel, USB broadcast memory before the power-off. 12: Users can upgrade firmware when manufacturers have updated. 13: The use of DC 12V/1A external power adapter power supply, wide voltage can use DC (10-24V) power supply