‘fully Shuguang-ed Mac’

by customer Atom shop:

I’ve been familiar with the Chinese Shuguang brand of tubes for some time. I’ve got a very rare collection of the original nickel-plate 7025 Select Silver Series which went out of production long ago. Bellari used these in their early VP129 phono preamps. McIntosh has used the comparable grey-plate 12AX7 version in their gear. (my own Mac’s stock tubes)