Tributaries T1A is a single outlet power plug that provides surge protection and noise filtration. For its small size, the T1A is the most advanced surge suppression available in a consumer product. This small model packs 540 joules of surge protection. To protect your valuable equipment, Tributaries T1A utilizes the X3MOV and packs 540 joules of surge suppression into its small size. The X3 MOV is the most advanced MOV available in today's surge technology. It is capable of suppressing more energy, faster. Tributaries Power Strips feature active filters to keep external noise from contaminating your electronics performance. Everything in a home with a motor or micro-processor generates background electronic noise. By greatly reducing this noise your electronics will yield significant performance improvements including increased dynamic range, reduced harshness and low level details that were previously masked by noise. The T1A is a great solution for protecting subwoofers, garage door openers, sprinkler systems, Espresso makers, in fact, any device that has electronic time readouts.