Car audio amplifier essentials: channels, power, and clarity
Amplifiers are often associated with high-performance car audio.
In fact, a car stereo wouldn’t work without one.
The power of an amp dictates how loud and distortion-free the sound is.
Do You Really Need a Car Audio Amp?
Another factor to consider is whether the head unit includes preamp outputs.
These outputs bypass the built-in amplifier and send a clear signal to an external amplifier.
If your head unit doesn’t have preamp outputs, you’ll need an amp with speaker-level inputs.
The other option is to use a speaker to line level converter.
A decent head unit makesfinding the right car ampeasier.
Head unitsthat contain powerful amps are more expensive than basic models.
Channels and Other Amplifier Features
One main differentiating factor between amps is how many channels they have.
Each amp must be matched to the system that it’s going to power.
Some amps have low-pass orhigh-pass filtersbuilt in, which make them ideal for powering woofers or tweeters.
Other amps have variable filters, bass boost, and other features.
The key value here is theRMS, but there is no specific number to look for.
