I want a monastic level of inner peace, and I want it with the speed of a DoorDash delivery. I am American, after all. So you can imagine my relief when I found out about 40 Years of Zen ...
This lovely little number is the EF80 pentode thermionic valve, or vacuum tube, made by Mullard beginning ... Before the vacuuming begins, the inner assembly is mounted on a glass base with ...
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