Something odd happened with the Sovtek 12AX7LPS. I can hear some odd noise coming through headphones as I move my hand closer to the tube.hum. Also if I touch the unit. (Bellari). If I lightly touch the plastic volume knobs, I get a funny squeaking sound like the skin rubbing plastic is amplified xxxxx. The high frequency is also slightly distorted in the music. I tried reseating, same thing. The Tung sol doesn't do any of this.
I'm guessing something loosened up in the tube due to expansion and contraction.
I'm guessing something loosened up in the tube due to expansion and contraction.