The Hammond 369BX is a versatile high-voltage filament transformer within the 300 Series, offering universal primary voltage compatibility (100-240 VAC, 50/60 Hz). Designed for both full-wave bridge and full-wave C.T. operation, this transformer is ideal for tube amplifier projects and various industrial applications requiring a combination of high voltage and filament power. Key features include a Faraday copper primary shield to reduce capacitive coupling and concentric winding for low stray field and noise. The transformer is CSA certified and finished with a durable black powder paint.