The TB1 is a vacuum tube (valve) microphone incorporating the philosophy that the best microphones use high quality, yet minimal components, along with hand selected tubes. Using the finest available materials to build the best possible capsule, the Studio Projects TB1 achieves this philosophy and more. Valve microphones have long been appreciated by studio engineers for their warm yet natural sound. The Studio Projects TB1 provides audiophile sound engineers with the classic vacuum tube design combined with today's better quality components