As good as it gets

My all tube integrated amp took some time to sound it's best, whether its the internal components or tubes I can't say. Then I could begin tweaking my system for better performance. I sounds wonderful now.

After I spend some time listening to my HT system I'm always amazed and impressed when I fire up my 2 channel system for some vinyl or cd playback... even FM radio is a joy to listen to.

Tubes can take 2-300 hours to fully settle in as well as coupling capacitor 
50 hours not possible 

Don't forget the brain. It also has a 'burn in period' when using new gear.

This is your brain 🧠 This is your brain after burn in 🍳

@geoffkait , that seems like lead substance of high temperature had traveled through brain and fried it. guns no good.