Stancor Transformer TT-11 Tinytran - Microphone, Pickup or Line to Single Grid

Description

This is a rare, used, Chicago Transformer TT-11 “Tinytran” audio transformer from the vacuum tube era.  It is for interfacing a microphone, pickup or line input to a single grid vacuum tube.   Primary impedances: 50, 200/250, 500/600 ohms.  Secondary impedance 50,000 ohms.  It is in its original box which contains its original data sheet.  All connections pass a continuity test.
One of the original catalog descriptions of these transformers says: “These miniature units have an exceptional frequency response for transformers of this size: 1 db, 30-15000 cps.  Maximum level 0 db.  They are built with nickel steel laminations and have clearly marked stud-type terminals.  Tinytrans are cased and potted in 7/8” square, anodized aluminum cans with phenolic terminal boards.  Total height, including terminals, is 1 ¼”.  The case has two 2-56 threaded inserts for easy mounting.  The entire transformer weighs only 1.3 ounces.”