2 Tubes in processor should both glow the same

I have a tube processor and one of the two tubes is dimmer than the other. I have rotated the tube to the other socket, same thing. One is always dimmer than the other. Is this normal or abnormal? I played a test CD to check the channel balance and it seemed ok. I'm new to tubes but logically I would think both tubes should be of the same intensity.
No problem. your answers are over on Audio Asylum where you also posted
Color more important than intensity. Cherry red is a bad sign. Orange is OK, usually.
Absolutely no problem .. Pixelphoto