Features: Selection of high-quality material, stable performance, practical design, and long service life. EMC, EMI, and high-voltage resistance with reliable operational stability. These isolation transformers are high-efficiency audio transformers. Primary and secondary windings are tightly coupled, providing sufficient pass frequency bandwidth. High primary winding inductance and low leakage inductance help reduce hysteresis loss. Suitable for use in radio communication, broadcast television, and automatic control systems. Commonly used for voltage transformation or impedance matching. Specifications: Voltage ratio: 1:1 AC Impedance: 600 ohms DC Impedance: 135 ohms Power supply phase: Single phase Moisture-proof mode: Open Cooling mode: Oil-immersed air-cooled Frequency characteristics: Intermediate frequency Winding type: Double-wire winding Core material: Amorphous alloy Core shape: EI type Structure: Vertical Weight: 40 g Package Included: 1 x Pack of 10 Audio Transformers