Our LG-16-PRO-KIT comes with everything you need to get started finding leaks in swimming pools. Our LG-16-PRO  Hydrophone pre-amp is designed to accurately detect leaks in swimming pools, making it perfect for any companies or technicians in the pool leak industry. It features a sensitivity adjustment and a mute switch for easy listening controls, along with a built in battery saver option. Made here in the USA only using high-quality materials, this preamp is durable and is a must have for swimming pool leak detection. Also this set features the XR-1 hydrophone designed for finding leaks in pools and is engineered to be super sensitive and provide a clear sound. The XR-1 is unmatched with similar products as it was made for finding leaks.  This set includes (1) LG-16-PRO Pre Amp (1) XR-1 Phantom Powered Hydrophone and a (1) pair of Walker headphones.