Puritan PSM156

Typically tube break in can take 200 hours or more.
During that time you will have periods of good sound/better sound/back to worse/better again/back to worse and all sorts of in between until it’s finally broken in.

How many hours do you have on your rectifier?

chazzzy007

 I know tubes need a break in, I did not know they can sound better, worse then better. I thought they just get progressively where they are going. I have only 20 hours on the tube. Maybe I will leave it on during the weekend to see what happens. Thanks for the heads up.

Andy

Chazzy007,
 Thats what started this whole power conditioning thing. I was able to purchase a Phillips 5R4GYS from someone on Ebay. The day I installed it into the Modwright power supply for the Oppo 205, I was blown away by how quiet and amazing the sound was coming out of the speakers. Really blown away. I could not believe that this tube was able to do this. Well, it lasted for that listening period. Ever since then it has gone back to where it was before installing this tube. Don’t get me wrong, still very good, but not like that. I have since checked the tube with my tube tester and it tests great. I can only assume that this great sound was due to a lack of noise, perhaps AC noise. Maybe even the time of day. So that one short period of time started me on this AC noise journey. I am currently using a Furman, I believe its a 20 PFI. 

Thanks,
Andy

That is a disgrace