What are these tubes

Mcfarland, the integrated amp had 6550's in it when I bought it, but I replaced them with KT 88's last year and they're still in good shape.

The unit is not self biasing, and the manual is POOR at best. I don't know how to bias the Raytheon or the Tung-Sol tubes, and the manual doesn't have any information about them. Based on the condition of the power tubes when I got them, I wasthinking it would not be a bad idea to replace the pre-amp tubes.

I don't have any way to take pictures or post them. Sorry.

I don't really do anything on Audio Asylum - I haven't found it to be very user friendly. I'm not really very good at this computer business.

Viridian should I wait till they cool off first : )?

Mcfarland, are the two Raytheon tubes really 6SN7GT's? There is no paint on them at all, so I have no way of determining their lineage.

I did bias the KT 88's when I installed them. I had to since one of the 6550's was pracitically blinding me,it was running so hot.

Do the numbers I gave for the Raytheon tubes indicate their age? The bases of the Tung-Sol and the Raytheon are a dark orange color, if that means anything.

There is a guy here in town that can check the tubes. He has a repair shop that is most definately not geared toward HiFi. For that reason I would be disinclined to buy tubes from him. He is looking toward functionality rather than ultimate quality. Of course you could say that about me considering the integrated amp I am using.