... efficiency 4.Low magnetic strayfield levels 5.Customized amplifier toroidal transformer:1. Universal Purpose2. Reliable Safety Approvals3. Low profile ... Toroidal Transformer Series 25VA~1000VA Primary100V, 115V, 120V, 230V, 240V / 50 HzSecondaryCustomizedStandardUL506, UL1411, EN61558Insulation ClassClass B, Class F, Class HMountingOne ... data are subject to modification amplifier toroidal transformer