I have not noticed that with my RA Opus 21, and I have owned it, happily, for many years.
Of course mine is always left plugged in, (so it is in standby mode).
You might want to give Jeff Kalt, at Resolution Audio, a call to discuss it with him. (A nicer guy you will never meet.)
Good Luck in solving your problem.
Of course mine is always left plugged in, (so it is in standby mode).
You might want to give Jeff Kalt, at Resolution Audio, a call to discuss it with him. (A nicer guy you will never meet.)
Good Luck in solving your problem.