Ultra-Flexible 180-Watt, 4-Channel PA System / Keyboard Amplifier with FX and FBQ Feedback DetectionUltra-flexible 180-Watt 4-channel PA System / Keyboard AmplifierPowerful 12' BUGERA woofer and custom-made 1' driver for ultimate sound reproductionIntegrated 24-bit digital FX processor with 100 awes..