Thanks for the reply, I think I have a bad tube since if I switch tube positions, the problem is now on the other channel and the previous channel is now OK !
These are brand new ECC99 tubes from JJ so maybe there is somthing about their quality control that is lacking ?. Never thought that a brand new tube would act like that? I use mostly older NOS tubes in much of my audio gear that are still going after 40+ years !
I have a replacement ECC99 on the way so hopefully I will be able to up and running soon.
Actually I have two SRM-T1 units , one that is still bone stock and this one I am modding to ECC99 tubes. I want to be able to compare them directly to see what sonic changes or improvements occur.
I will report my findings as soon as I can.
Great. I love the sound of my T1S but compared to my SRM-3 it lacks bite. Would be almost too good to be true if you could improve the power output of the T1 without touching its sound sig.
I would be surprised if JJ had become significantly better. I never came across a "decent" sounding JJ tube. My best driver tubes are all vintage US triple mica black plates - the best of the best with extra support rods.
Just my 2 cents.