Really? It’s limiting current even on idle? I don’t know the amp. Maybe it runs hot. But I’m surprised at that. Yes, plug it back into the wall and report back.
ARC Ref75se bias
So I have a ARC Ref75se, with tubes under 300 hrs, and a new Puritan 156, with maybe 30 hrs. I checked my tube bias not long before getting the Puritan. For some reason I decided to check it after the Puritan was installed, with my amp plugged into the Puritan. I found it odd the bias on all four tubes was on the low end. Not in but close to the "bias zone" on the meters. I know I could plug the amp back in to the wall and see what the bias does. It always remained very stable on all four tubes. Any ideas?