"B-Stock, LD Systems Curv 500 IAMP, 4-channel class-D amplifier, designed for CURV 500 Intallations or as an universal amp with the ""flat preset"", frequency response 10 - 22000 Hz, 19"" construction with 1 HE, 4x 240 watt @ 4 Ohms, 4x 120 watt @ 8...