Material: alloy material with stable performance and long service life. AC impedance: 600:600 ohms. O Closely coupled with isolation former, primary winding and secondary winding, with enough passband, small inductance of winding and small leakage inductance, which can reduce the influence of hysteresis loss. Voltage ratio: audio former 1:1. These isolation formers are all high efficiency O-type formers with EMI, high voltage and stable performance. Stable performance: lead-free compliant electronic components. Stable operation, convenient use and long service life. It is applicable to radio communication, radio and television, automatic control, voltage amplification or power output components. Colour:As Shown Material:Alloy Package Contents: 10 x Audio former Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.