Hey guys, I've just recently brought a little desktop tube amp for my Grado SR225i's. I brought it off a website called Freds Amplifiers here is the exact model.
I'm really happy with how it sounds, my only complaint is having to wiggle or pull the tube out every now and then to stop the volume making a noise when i turn it up or down. So i was wondering if buying a better quality 12AU7 tube like this would be worth it or not? would it fix the problem and improve the sound? Any other suggestions and help would be awesome, I'm a massive noob with stuff like this. Thanks :)