Altec Lansing 9441A is a powerful amplifier designed for professional audio applications. It features a dual mode of operation, allowing it to be used in either stereo or bridge mode. In stereo mode, the amplifier can deliver up to 75 watts per channel into 8 ohms, or 125 watts per channel into 4 ohms. In bridge mode, the amplifier can deliver up to 250 watts into 8 ohms. The 9441A also includes a number of protection systems to safeguard itself and your speakers from damage, including load protection, amplifier protection, and speaker protection fuse selection.