I’ve found two photos reliably dated 1992, one from Horde and another from Roseland. In both, Trey is using the Languedoc Blonde No. 1 (aka “Mar Mar”), the Mesa/Boogie Mark III head, and the 2×12 Languedoc cabinet. In the Roseland photo (3/14/1992), Trey has the Alesis Microverb sitting atop the Boogie. Photo credit to Getty Images and Steve Eichner.