Features: Enhances auditory experience with our Auditory Frequency Board, a must DIY accessory for any audiophiles to customize their sound. This frequency board ensures durability and superiors signal integrity for clear auditory output. For DIY auditory projects, it offering opportunity to personalize and enhances their Auditory equipment. For upgrading your home theater or assembling a customizable speaker setups, this frequency board for various auditory environment. Easy installation component that stands out in the category of Auditory & Video Equipment. Specifications: Input:AC220V Size：about 11x7cm/4.33x2.75in Package Includes: 1PC Pilot Board Ignition Board note: Due to manual measurement, please allow error 0-1cm. Due to the differences between different monitors, the picture may not reflect the actual color