Car audio equipment, like home audio, also uses a power amplifier. People who are new to car audio think it is inconceivable to install a power amplifier in a computer audio car, or even install multiple power amplifiers. So why install a power amplifier? Because the power supply voltage of the car is only 14.4V, power (P) = voltage (U) x current (I), if only the power amplifier of the host itself is used, Z can reach 4x55W, which can only drive the power Small speakers and distorted at high volume, the sound sounded hard and inelastic. Human hearing has a limit, the lower limit is less than the upper limit of the volume that can be heard, which is why music always feels stronger at the beginning.

It is quite difficult to make any sound as realistic as possible: the noise from the windshield, interior trim, engine, and the chassis and tires driving on the road has a huge impact on the listening environment; low sound pressure Insufficient power in the stage and power stage is also a big drawback, unable to replay the full information of the music. To solve these problems, it is necessary to install a power amplifier. The inverter power supply is used inside the car power amplifier, and the power supply voltage is increased to ±40V, and the power is also increased, so that high-power speakers can be used. Powerful and resilient. Especially when pushing a large-sized woofer, the bass range is extended and the sound is very full.

Today, although most manufacturers produce high-power amplifiers, they do not have common specifications, nor do they require a unified power output standard, unlike household power amplifiers that have power rating standards. In short, a power amplifier is designed and used to match the sound quality from a sound source, especially a digital sound source, it does not degrade the sound, on the contrary, it is extremely efficient, has minimal power loss, is versatile and can expand the system , to upgrade it, it is an indispensable equipment for audio enthusiasts