Material: alloy material with stable performance and long service life. AC impedance: 600:600 ohms. O Closely coupled with isolation transformer, 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 : audio transformer 1:1. These isolation are all high efficiency O-type 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 , automatic control, voltage amplification or power output components. Colour:As Shown Material:Alloy Package Contents: 10 x Audio Transformer Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.