Brand new and high quality Feature: This is a DIY white noise signal generator kit parts, simple and easy to install. The white noise signal is widely known as noise, similar to the noise floor of a radio. It is very versatile, such as burn-in machine, testing, complementary treatment of insomnia, and so on. This machine is powered by DC 12V. Two signal outputs: J1 outputs a 1V fixed and non-adjustable noise signal with large internal resistance, suitable for pre-amp input. JK1 outputs a 1V continuously adjustable white noise signal with small internal resistance, which can directly drive headphones. The two signals do not affect each other. Especially suitable for people who are new to electronics. Note: The delivery is DIY parts, you need to weld and assemble it yourself. Specifications: Item Type: DIY White Noise Signal Generator Kit Material: Electronic Components Size: 4.8x2.8cm/1.8x1.1in Color: As Shown Quantity: 1 Set Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. Make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you. Package Includes: 1 Set x DIY White Noise Signal Generator Kit