Does a Chrysler 300 have factory amp?

Whether a Chrysler 300 has a factory amplifier depends entirely on the year and the specific options package selected when the car was new. Some model years and trims included a factory amplifier as part of their premium audio systems, while others did not. There's no single answer. You'll need to check your owner's manual or look for an amplifier unit (usually under the seats or in the trunk) to be sure.