The four-in-one conversion double transformer is a high-quality passive audio interface and an audio isolator with . Stereo sound effect, intelligent conversion, balanced noise reduction, double transformer isolation. Parameter: Name: 4-in-1 audio noise reduction isolator Model: PRO G303S Input/output impedance: 600Q/10KQ (AC impedance) Frequency response:10HZ-50KHZ+/-.5DB@+4DBU Fixed loss: Less than 0.2DB(REF1KHZ1V RMS) Insulation resistance: DC1000V100Q Isolation voltage: AC50HZ-60HZ0V-1500V Input interface: XLR X2, 6.35X2, RCAX2, 3.5X1 Material:Aluminum alloy colour: black Package Contents: 1 x Audio signal isolator 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.