TAD RT503 5Y3GT Rectifier Tube

I was searching for a tube rectifier for an old champ 71, thomann has only TAD but I have trusted thomann that they have kept the one that is best selling so I have ordered it . this tube did not alter the sound that was coming from the old RCA USA that was in that I had taken off to be preserved. I did some swapping back and forth but without any drastic change in tone. so yes although it is the only choice at thomann I believe it did the job wel especially when it part of a bigger order you want everything to come from one source.