4X Passive Volume Controller Passive Preamp Active Speaker Volume Adjustment Controller Professional Audio Equipment

Specifications: Input Channel: Supports 1 set of stereo lotus head interface inputs Output Channel: Supports 1 set of stereo lotus head interface output Volume Adjustment: Using a professional 128mm push switch Signal to Noise Ratio S/N: Greater than 98dB Output Gain: 0dB Output Loss: Less than 0.01dB Distortion: Less than 0.002% Frequency Response: 10Hz-50kHz Input and Output Impedance: 10-50kΩ Input/Output Interface: The input/output adopts a gold-plated lotus head interface Power supply: No external power supply required, directly plugged in for use. Material: Metal colour: black Package Contents: 4 x Passive Volume Controller 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.