UTC A-44 Vintage Line Matching / Bridging Transformer (United Transformer Co.)

Up for sale is a genuine vintage UTC A-44 transformer in the original metal can. These are highly regarded for vintage audio, broadcast, and telecom applications when impedance matching or line conversion is needed.

Specs (from label)

• Primary: 4000Ω / 1000Ω

• Secondary: 600Ω / 150Ω

• Frequency response: 30Hz – 20kHz

• Max level: +30 dBm

• Hi-Pot: 750V

• Marked: United Transformer, New York, NY, USA

Measured DC Resistance (ohms)

• Pins 1 + 3 = 134.5Ω

• Pins 3 + 4 = 153.7Ω

• Pins 5 + 7 = 24.3Ω

• Pins 6 + 8 = 21.4Ω

Condition

• Used vintage condition with cosmetic wear from age/storage (see photos)

• Pins show oxidation/wear typical for age

• No further testing performed beyond resistance readings above

📌 Due to age, this item is expected to be installed/serviced by a qualified tech as needed.
You will receive the exact transformer shown in the pictures.