A while back someone asked about tubed D.I. designs. They were referred to the Metas and the archives. A bit ago I felt the need to investigate the quesiton, and from the looks of things...we don't have anything on the topic of D.I.'s, tubed or otherwise. At least, nothing was returned on a search "di OR d.i.". And there's nothing, seemingly, in the Meta Metas.
Am I missing something, or have we really never talked about this?