300W x 7 Channel Power Output Remote Trigger: Activated from 3.3VDC to 24 VDC via a heavy-duty relay Protection Circuits: Optically –coupled with full automatic reset. Toroid Transformers: 40% more efficient than EI type. Separate bi-filar windings for each channel guaranty lower noise and crosstalk. Circuit Boards: Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house. Soft Start Circuitry: Ultra soft turn on reduces in-rush current to a minimum. Multiple units can be turned on without tripping circuit breakers eliminating the need for sequencing. Power Transistors: High-current, bi-polar output transistors with active bias circuits result in effortless operation. Power Cord: Detachable, 3-wire cord. 7-Year Warranty Parts and labor against defects in parts or workmanship. Dimensions: 17"w X 8.75"h X 18"d (chassis) Weight: 56 to 106lbs