The audio signal is well isolated and converted, the response frequency is extremely wide, and the spectrum curve is flat. Suitable for high quality audio transmission, enthusiasts DIY, pre-input output impedance matching, professional audio field. Balance unbalanced transitions. Professional factory production. Suitable for professional audio isolation noise, balance - non-balance between the conversion. There are two channels, one transformer and one channel. Since the primary stage is used and both sets of coils are wound around the transformer, the conversion between the letters can be completely balanced. Permalloy 600:600 audio isolation transformer: The transformer marked with measurement values high quality audio boost transformer, high-quality material wound, can filter to AC noise interference, remove burrs, Remove the digital flavor, improve the sound so that the sound becomes round, pure and delicate, oily luster. The bandwidth is very wide, the sound field depth increases after the transformer is added to , and the sound quality is very good. Can be used for a variety of high-end professional HIFI pre-stage, audio signal boost use. Color: As Shown Material: Plastic+Metal Package Contents: 2 * Audio Isolator 1 * board 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.