how do I retube?


I have a CAL Alpha tube dac and would like to know if I can change the tubes myself and if so what would I need to do? I am not very familiar with the technical side of high end so I would appreciate any help thanks Mike
mkaes
Remove the screws which hold the cabinet top on to the chassis; slowly pull the tubes vertically from their sockets. There are only two. Replace with high-end 12ax7a or 12ax7wa; i.e., Telefunken, Brimar, etc., etc., and enjoy!!
Please read your owners manual. If it's a no brainer, do it yourself. Also, don't touch the tubes with your bare fingers due to the oil they leave on the glass. Good listening!
>>> Also, don't touch the tubes with your bare fingers due to the oil they leave on the glass. I crack up every time I see this. Exactly what hazard do the oils from your fingers present to the tube? How many of the tens of millions of tubes that have been used for countless years were placed in the equipment with out getting fingers on the glass? The long and short of it is that if you want to keep fingers off the glass to make assuage neurosis or for cosmetic reasons, that's all fine and good. But let's not pretend that it has anything to do with operation or longevity of the tube.