1、This DAC converter can convert coaxial or digital audio signals into analog L/R audio, and can be connected to external equipment such as amplifiers through standard RCA‑type jacks. 2、The two‑way switch design makes it more than a DAC converter, not only supports digital‑to‑analog conversion, but also supports for Toslink to coaxialand coaxial to for Toslink. 3、Built‑in high‑fidelity amplifier chip, L/R and 3.5mm output can drive 16~150Ω impedance headphone/sound, and the volume control knob is only used to adjust the volume of the headphone jack and RCA jack. 4、Equipped with 4.0OD optical cable, coaxial cable and power adapter, no need to install additional programs, just plug and play, please set the audio output to PCM or LPCM. 5、You can adjust the volume of the audio output from the RCA L/R+3.5mm jack, and supports sampling rates of 32, 44.1, 48, 96, and 192 KHz, as well as 24‑bit S/PDIF input bit streams on the left and right channels.