Work-pro PA 4150 L is a 4-channel installation amplifier with 150W per channel. It can be used for both 70/100V line installations, and each channel has its own volume control and LED indicators (signal, clip and protection). The amplifier has several protections such as short circuit, thermal, ultrasonic and RF. The input and output connections are made through Euroblock, and it is 1 HU for 19” standard racks.