When I handle my tubes I will generally wipe them off before I turn them on. Tubes don't get as hot as halide lights and I have never seen one blow out like a halide but I think a little caution is prudent.
There are many equivalent tubes to 6922. It gets a little confusing at times but you get used to it after a little while. Some of the tube types that can be used instead of 6922 are 6DJ8, ECC88, 6H23, 7308.
New Old Stock are old production tubes that have never been used. I don't know exactly why older tubes are better. It seems there was an art to tube making that has been lost after tubes went from being the pinnacle of high tech to a niche product. Some of the old tube makers are Amperex, Siemens, Telefunken, RCA, Tung-Sol, Mullard, Sylvania... There are some real nice new production tubes that are available now so not all the art is lost. I really don't use 6922s anymore so I don't know were to point to for new ones.
Cheers,
Jim
There are many equivalent tubes to 6922. It gets a little confusing at times but you get used to it after a little while. Some of the tube types that can be used instead of 6922 are 6DJ8, ECC88, 6H23, 7308.
New Old Stock are old production tubes that have never been used. I don't know exactly why older tubes are better. It seems there was an art to tube making that has been lost after tubes went from being the pinnacle of high tech to a niche product. Some of the old tube makers are Amperex, Siemens, Telefunken, RCA, Tung-Sol, Mullard, Sylvania... There are some real nice new production tubes that are available now so not all the art is lost. I really don't use 6922s anymore so I don't know were to point to for new ones.
Cheers,
Jim