So, i just bought a TD after seeing That Pedal Shows Valve OD episode. Thought it sounded really good on there but have found a lot of people online complaining about the stock 12ax7 in it. Is it really that bad? I'm in Scotland so it'll be a while until it gets here and I can try it out. Anyone have anything good to say about the stock version? Mine is the one with the bias knob. Does that help?