I may be mistaken, but I believe the red indicator light on the front panel on the right side means the amp is operating in ultra linear. That is the normal default when powering on the amp. Try switching the amp to triode and see what happens. I expect the right red l may go out and a green light appears on the left? That’s how my Dialogue Premium operates, lights are just in a different location on mine
Straight out of the box doesn't work.
Just received my new Prima Luna EVO 400. Heavy thing, looks good. Took the foam off the tubes, only on the power tubes. Nothing on the small tubes. I'm new at this, don't know what they are called. I did notice some of the tubes were a little crooked so I seated them in a little better. However ( you new that was coming) two of the small tubes on the right kind of wooble. Did I spell that right? What the hell plugged in and red light on the right side. It doesn't work right out of the box. Going back tomorrow. Just wanted to let ya know. Going to go through the recommendations again. Good night.