Adopt EI series annealed silicon steel sheet, high temperature resistant oxygen-free copper enameled wire. 3W single-ended output spennir. Suitable for 6P1 6P14 and other tube amplifiers. Skeleton: 48X24 Tongue width: 16, stack thickness: 24 Elementary: 5K Winding method: 2+1 Secondary: 0—4Ω—8Ω DC resistance: 476 ohms Inductance: 12.5H Length: 50MM Width: 45MM Height: 43MM Installation hole center distance: 60MM Weight: about 0.41KG