Bought a few tubes for the MenaceTC.
Translation - 17 307A's, 10 KenRad, 7 Sylvania, average price of $9/each. Not all are guaranteed to work but crikey, at that price I just don't care. All I really wanted was one pair for testing (I have 3 NOS sets) and buying in bulk turned out to be cheaper than a single pair. Given DanC's love of the AD1 maybe I'll smash a couple 307As, just cause I can?