Tobo This audio decoder can automatically convert HDML input to 5.1-channel analog audio output, autoding AC-3/DTS (LPCM/PCM/RAW) input signal without any action This digital audio converter not only supports AC-3/ DTS/ LPCM / PCM / RAW, but also can decode Dolly AC-3/ DTS digital audio to analog audio Supports sample rate at 32KHz, 44.1KHz, 48KHz, 96KHz and even 192KHz (many others only support up to 96KHz), providing high sound quality. It also supports 24-bit SPDIF incoming bit current on the left and right channels With the volume knob to adjust the volume, so you can adjust the output volume. Noise can be eliminated when no signals are fed and turned off automatically while non-audio signals are fed in With SPDIF/Coaxial input and 2.0/5.1CH RCA + 3.5MM audio output, suitable for Blue-ray, DVD, PS3, PS4, HDTV, etc. (NOTE:RCA output should be connected to Amplifier first but not connected to the speaker directly)