The Jensen JT-11-BMCF is a Line Output Audio Transformer with 1:1 Bifilar Windings. This transformer is designed for ultra-high performance line output stages. Specially processed 80% nickel core alloy is used for lowest possible harmonic distortion of high level low frequency signals. For best performance, driving signals should be free of DC and source impedance kept as low as possible.
Line output transformers are useful mainly because they allow any output stage circuit topology, whether balanced or unbalanced, to drive any equipment input, whether balanced or unbalanced, without regard to special connection rules or specific cables. Due to the isolation they afford, hum can be substantially reduced. Jensen output transformers are available in a wide variety of package styles and offer the industry's best combination of bandwidth, level handling, and distortion performance. All have extremely low "leakage" (effective series) inductance that is required to drive very long cables. Various core materials are available based on the source impedance of the driving stage.