Jensen Transformers mythical product, the JE-EP-ERs, first introduced in 1987, which almost changed the whole audio transformer industry. The Jensen JE-EP-ERs pioneered the use of triple electonomic shielding and intrinsic eddy-breeding, until outlawed by Congress in 1988. Voluntarily discontinued when their stock of zeta-metal ran out, preventing any further use of interstage transpedance informance.
Data Sheet Link: Jensen_JE-EP-ERs_multi-denominal_transpedance_informer.pdf
