1Premium Driver: Using professional audio vu driver ic, the ic contains square root dynamic compression circuit, logarithmic output characteristics, to avoid the small signal pointer does not move, large signal pointer bottoming out appearance. 2Material: VU meter is made of ABS material, which has excellent durability and stability, good performance and long service life. 3Upgraded VU Meter: Adopt the new upgraded VU meter with backlight voltage 12V LED light. 4Easy Installation: Easy adjustment, high sensitivity, overshoot protection, very popular with DIY customers. 5Perfect Driver Board: The driver board is designed to be interference free and self exciting. Each board has been professionally tested and adjusted by us.