The TOA DA-550F-HL is a high-quality rack mountable four-channel digital amplifier. Designed for highly efficient operation the DA-550F-HL is capable of outputting 550W per channel at 8 Ohms. Each channel has an individual level control knob and all input connections are via 3-Pin removable terminal block. Output connections are made on a standard screw terminal strip. The DA-550F-HL has an internally settable high-pass filter as well as built-in protection circuitry to protect against damage from overheating and overloads. Four front-panel air vents each offer removable dust filters for easy maintenance to ensure your amplifier keeps running smoothly. Bridged operation is available via simple push-button operation if desired.