Shure microphone input transformer Step Up

Vintage Triad Audio Input Transformer 150 Ohms / 60k

Triad Audio Transformer A-67J Matched pair appear to be 1966 tested good.

VINTAGE SESCOM MI-53 AUDIO TRANSFORMER 150/600 ohm Primary 600 Ohm secondary

Beyer 80-000-007 Mic Transformer (W/ Electrostatic Shield) *Many Available*

Altec 4859 Input Transformer Step Up Sut Mic In Microphone Preamp

Shure microphone input transformer Step Up

Yamaha/Tamura Input Transformer Pair Model: GA02320