The signal transmission distance is shortened by N times compared to directly installing with silver signal lines! RCA can be directly fixed on the board! Equipped with a 40CM long cable, the switch adopts a high-end toggle switch for better feel and quality! Compact in size, even the ultra-thin chassis can fit in, making installation more convenient! It is the best choice for assembling fever amplifiers and front-end amplifiers! This product is assembled with advanced double-sided PCB and silver plated contact relays from Takamizu, Japan. The signal ground and power ground of the left and right channels are completely independent, striving for the best separation! This board is suitable for RCA similar to CMC brand. Installation method: directly solder onto the board, or lead wires. Size: 64MM * 42MM RCA hole distance: 25mm left and right, 16mm up and down (center) Voltage: AC: 12V -0V -12V Color: As Shown Material: plastic Specification: (welded) Package Contents: 1* audio 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.