Output transformer 1.For tube amplifier usage 2.SE for 45, 300B, EL34, KT66, KT88 3.99.99% copper wiring 4.5k SE Output transformer Output Transformer for tube amplifier ModelImpedanceFrequency ResponsePowerZP(Bp)SecLM-9901U10KΩ(SG,CT)0-4Ω-8Ω10Hz-60KHz+-2dB10WLM-9902U8KΩ(SG,CT)0-4Ω-8Ω10Hz-60KHz+-2dB17WLM-9903U6.6KΩ(SG,CT)0-4Ω-8Ω10Hz-60KHz+-2dB25WLM-9904U5.5KΩ(SG,CT)0-4Ω-8Ω10Hz-100KHz+-2dB50WLM- ...