I have used my Stax SR-5 with SRD6/SB connected to a Technics SU-600 Stereo amplifier after a longer period of not using them.
Unfortunately, the sound is distorting, like heavy noise on vocals and bass (sounds like really bad/loud mastering X 10). I do not think that it's happening in the headphones, since the sound is bad on speakers also connected to the SU-600, too.
A year ago everything worked fine. What could have happened to the amplifier to make the sound that distorted though it was not moved or used? Can it be fixed?
Maybe somebody has got an idea, thank you in advance.