There are a few things to consider when purchasing a car amplifier. The first is the type of amplifier. Some amplifiers are designed for specific types of music, such as rock, metal, or classical. Other amplifiers are designed for general listening, such as home theater or portable audio. The second is the size of the amplifier. Some amplifiers are small enough to fit in a small car, while others are larger and require a larger car’s audio system to function properly. The third is the type of audio system that the amplifier will be used in. Some amplifiers are designed for specific types of audio systems, such as satellite or DVD players. Other amplifiers are designed for general listening, such as home theater or portable audio. The fourth is the price. Some amplifiers are affordable, while others are more expensive. The fifth is the type of amplifier. Some amplifiers are designed for specific types of music, such as rock, metal, or classical. Other amplifiers are designed for general listening, such as home theater or portable audio. The last consideration is the type of music that the amplifier is designed for. Some amplifiers are designed for specific types of music, such as rock, metal, or classical. Other amplifiers are designed for general listening, such as home theater or portable audio.