Samar RT32 Toroidal Transformer
Handmade in the US by Samar Audio, the RT32 is a 1:32 step-up transformer for passive ribbon microphones. This design is made for the Apex 205 and 210, Nady RSM-1 and RSM-2, Cascade Vin-Jet, and other "long ribbon" Chinese microphones.
This is a toroidal design, not a bobbin wound transformer. Toroidal transformers are used in the best ribbon mics in the world.