I ordered the part because I moved with my Behringer Studio Monitors disturbing noises from my motherboard or maybe the power supply. This has been reflected in the audibility of the mouse movement. With this device, I can now from the mainboard via optically coupled to this box and from there on to the monitor jack boxes. Lo and behold. No noise and high-frequency cheeping mouse more. However, you can hear a very very light pruning of lower frequencies. (Very easy)
A colleague of mine has an older model of this converter in which the low frequencies are cropped so that the music lacks any volume. This version fixes the problem in an appropriate setting. The difference is really small. The sound behällt be lush volume.
!! IMPORTANT !! Währe yet that was actually included a non-matching in Germany power supply. However, I was able to fix with an old mobile phone power supply.