Originally Posted by babyoh
Which 300B amp do you use? What's TVC?
It's an amp built by a guy named Gabriel Velez. It is a bit different from many 300B amps in that it uses DC on the filaments instead of AC. This is considered a bit taboo when it comes to 300B amps but makes for a very quiet amp.(something that is rather welcome when using very revealing headphones) it is also SS rectified unlike the majority.
A TVC stands for Transformer Volume Control. I would suggest doing a search on Google as there is a ton of info about them and would explain it far better than I can. Mine is an Electra-Print PVA.