Amperex 6DJ8 tube construction

Joe’s Tube Lore refers to the A frame type but that tube by construction does not have the ususal type of shield as earlier tubes (like the one on left picture).

No, Joe is describing the tube on the left in the picture in the section I quoted. The A frame tube has a getter (not a splatter shield) supported by 2 angled, wide metal supports.

http://tctubes.com/images/products/detail/435_ECC88_AMP_800.JPG

Richardson Electronics purchased the Amperex name years ago and rebadged/boxed tubes of various origins as Amperex.

The only ones I purchased were 6dj8's and 6922's that were of Japanese manufacture.

DeKay

After reading posts near the bottom of this discussion, it appears that it became the Wild West for NOS tubes in the 1990’s. Lots of re-branding and fakes going on.

This is just a guess, but a splatter shield may be to prevent secondary emissions.

Brent Jessee -from Audio Tubes - was kind enough to explain.

The splatter shield prevented getter flash material from migrating down during the flashing process. Without the shield the flash material could stain the grid and/or plates and affect the operation of the tube. The shield has no effect on the sound and like the o getter is pretty much useless after the getter flash process is complete.