Invest in some super low noise selected NOS pre amp tubes from a serious seller
I got mine from Andy at Vintage Tube services. I can now only hear soft hiss from one foot from tweeter when nothing playing. That’s pretty good, and has zero neg effect. Other tubes I could hear across the room!
a bit of crackling or tinkling is normal as tubes warm up. I get a little of that for a minute or two.
also I believe good tubes in a pre amp will last years not 6 months. I have NOS Sylvania 6sn7s , been using for years. Was told to expect easily 10000 hours.
am using a Rogue 99 magnum.
I got mine from Andy at Vintage Tube services. I can now only hear soft hiss from one foot from tweeter when nothing playing. That’s pretty good, and has zero neg effect. Other tubes I could hear across the room!
a bit of crackling or tinkling is normal as tubes warm up. I get a little of that for a minute or two.
also I believe good tubes in a pre amp will last years not 6 months. I have NOS Sylvania 6sn7s , been using for years. Was told to expect easily 10000 hours.
am using a Rogue 99 magnum.