Personally, I have a Variax 59 JT , and when plugged it in HD500 by RJ45 cable could use it without the drums and playing normal, now of nothing if euconectar it only by cable RJ45 , she just connects Variax more no sound no to work must connect another cable p10 to output the sound , and yet she is having a hiss , something that previously had not when he called simulations , someone knows what might have happened? thank you