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Introduction to Car Stereo

What is a car stereo?

A car stereo is the centerpiece of any car audio system. Also known as a radio, receiver, or head unit, today's car stereo performs a variety of complex functions. To understand these functions, it's helpful to think of a car stereo as having three different sections:

Kenwood DDX770

Modern stereos, like this Kenwood DDX770 DVD receiver, are full of useful features

  1. Source — This is the part that "plays" the music. Sources may include a standard AM/FM tuner, CD player, MP3/WMA/AAC decoding, satellite radio, iPod® connections, USB inputs, DVD player, or even cassette player.
  2. Preamp — This is where all sound adjustments are made. The preamp section includes controls ranging from simple volume, balance, fader, source selection, and tone adjustments to sophisticated crossovers, equalizers, and time correction.
  3. Amplifier — The amplifier section boosts the small (low-voltage) audio signal coming from the preamp section into a larger (high-voltage) audio signal that's sent out to the speakers.

Why would I want or need a new car stereo?

A new stereo will give you better sound and more playback options than the typical factory stereo.

Better sound quality — Superior built-in power and better circuit design mean that an aftermarket car stereo isn't just louder than the typical factory stereo, it also produces cleaner, richer, more detailed sound.

New sources — One of most common reasons to get a new stereo is to expand your system's music playback and other capabilities. Aftermarket stereos offer advanced capabilities, such as:

  • MP3/WMA/AAC playback
  • iPod® support
  • satellite radio
  • HD Radio™ reception
  • DVD playback
  • Bluetooth® connectivity
  • GPS navigation
  • support for Pandora® Internet radio
  • support for Android™ phones

We're also seeing increased integration of smartphone apps with both iPhones® and Android smartphones.

Other popular reasons for purchasing a new car stereo include:

More features — Advanced features on new stereos include full-color animated displays, customizable color schemes, touchscreen monitors, and precision sound controls like digital time correction and parametric equalization.

Cool cosmetics — Aftermarket car stereos, with their high-tech displays and cutting-edge layouts, can enhance the appearance of your car's interior.

Expandability — Auxiliary inputs, USB connections, and audio/video outputs allow you to expand your system by connecting portable music players, flash-memory devices, rear seat TV screens, external amplifiers, and powered subwoofers to your new stereo.

Security — Features like detachable face plates and security codes help protect your investment from theft.

What kind of car stereo is right for you?

It's easy to feel overwhelmed by the sheer number and variety of models in our car stereo listing. How do you know which one is right for you? Our expert shopping guides can help. Click on the links to learn more.

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