Just realised the classic gain channel (clean) is louder than the ultra gain channel on my amp. Is this normal? This is with both channels being set the same. Also the preamp tube for the classic gain channel is very dim to the point it's hard to see it lighting up! This is my first tube amp so I'm pretty clueless.
The levels on both channels are never the same, this is why each channel has its own volume control , so the customer can balance the two to a level they find comfortable. The way you have described the valves sounds they are working as they are suppossed to.