If you want to select a second audio to your car. In essence, to choose the former goods including cheap car audio, or spare part for heavy equipment by simply selecting a quality brand and see if each component is still circulating in the market or not, ask for a discount on items you buy and will not be left behind also consider the following multiple checks this:

1. Head units

That means you have to look at the condition of the goods, check the serial numbers listed to find the output of goods how. Check the seal on the rear tape body, if damaged sign had been dismantled. For that you need to alert anyone to know the components in it are replaced. Notice also the type of solder, solder manufactured to be more subtle because it is done by machine. Check every button on the front panel, and test each function, if equipped with a remote, do not leave testing using remote.

Next, observe the back of the cable. So that you know whether there is a transistor that may leak or not.

2. CD changer

In this section, you will need to consider the speed of loading of the CD Changer, do not let more than 10 seconds, because if the CD Changer is slowly loading shows optical conditions that had expired.

3. Power amplifier

In addition to the Head Unit and CD Changer, you need to observe is the power amplifier, you should observe the overall shape if there are many abrasions on his physical or not. Doing demolition on the outside so you know on the inside, otherwise refer to the sound that comes out of each channel.

4. Speaker

For this sound-producing devices, consider and examine the kenos. Press it in, if the right again, it is still in good shape but if it does not come back like before you press, it is advisable to not choose it, besides setting the battery, connect the positive and negative terminals on the speakers.