This Stancor Output Transformer was pulled form a working
Vintage Ampeg Reverberocket II Amplifier that belonged to a close friend.
all output connections have been tested, since the label had fallen off at some point.
Primary. Brown-Plate, Red-Center Tap, Blue-Plate
Secondary. Brown-Ground, Red-4 Ohm, Orange-8 Ohm,
Black-16 Ohm, BLK/YEL-250 Ohm, Yellow-500 Ohm
AI Overview
The Stancor A-3801 is a legendary 35-watt push-pull output transformer originally built by the Chicago Standard Transformer Corporation, highly prized by both hi-fi audio enthusiasts and guitar amplifier builders.[1, 2]
Notable Uses
Trainwreck Amps: Famously used by Ken Fisher in legendary Trainwreck guitar amplifiers like the Express and Liverpool. [1, 2]
Vintage Hi-Fi & Amps: Found in vintage public address (PA) systems, organs, and hi-fi mono/stereo tube blocks (sometimes pulled from vintage units like Newcomb or Ampeg gear). [1, 2, 3]