"I need an amplifier that can produce 75 Watts per channel. Your product line does not indicate that you have one. Do you have a 75 Watt amplifier that I have been unable to locate?"
ANSWER: No, we do not manufacture a 75 Watt amplifer. The way to do this is to use an amplifier that is rated from the next highest power node and reduce the H-Bridge supply voltage (PVDD). In your case, plase consider the TAS5342L. The power supply voltage graphs are on Page 1 of the TAS5342L datasheet.