The JBL Grand Touring GTO 75.4 II is a high-quality 4-channel car amplifier designed for car audio systems. It is capable of delivering 104 watts RMS per channel at 4 ohms and 142 watts RMS per channel at 2 ohms, providing powerful and clear sound output for your vehicle. With the JBL brand reputation for quality audio products, the Grand Touring GTO 75.4 II is a reliable choice for enhancing your car audio experience. Amp tested and working at the time of this listing