RCA and 3.5mm headphone output volume can be controlled by TV remote control (CEC).The optical and HDMI interfaces volume cann’t.
Supports eARC and ARC inputs(Please connect it to the HDMI port of the TV marked with "eARC"!/ARC);HDMI, fiber optical, RCA, and 3.5mm headphone outputs (HDMI only transmits audio signals and no images);
When the 2.0 indicator light is on, it indicates that the audio signal output by the TV is PCM stereo, and the HDMI interface, fiber optic interface, RCA interface, and 3.5mm interface all output stereo audio.
When the 5.1 indicator light is on, it indicates that the audio signal output by the TV is 5.1 channels (such as DTS, AC3), and the HDMI interface and fiber optic interface output 5.1 channel audio, while the RCA interface and 3.5mm interface have no audio output.
When using RCA or 3.5mm, please set the TV to PCM output. when the 5.1 indicator light,there is no audio output from RCA,3.5mm interface.