Check out our full selection of car amplifiers: find out how an amp can make your system sing.

Mono amps offer maximum bang per buck for driving subs, as they deliver more power at lower impedances.

Use a 2-channel amplifier to power a set of speakers, or switch to mono mode to drive a sub.

4-channel amps power your front and rear speakers, or switch to 3-channel mode to run speakers and a sub.

5-channel amps power your entire system: 4 channels for front and rear speakers, plus a sub channel.

These upgrade packages allow you to get impressive sound quality from your factory radio and stock speakers.

An equalizer boosts or cuts frequencies to shape the overall sound of your audio system.

A crossover network directs the correct frequencies to the various amps, speakers, and subs in your system.

Signal processors maximize system performance, and adjust your system for your car's acoustics.

You'll find a variety of bass packages here, from a simple sub/box combo to an amplified multi-sub setup.

Add amps, speakers, and subs to your vehicle, while keeping your factory radio.

Line drivers boost voltage from your stereo's line outputs, so you get the most from your amps with less noise.

Add sources to your factory radio, so you can build an audio/video system while keeping your factory look.

Top-quality wires, cables, capacitors, fuses, and more

You'll need one of these cables to connect your Helix factory upgrade system to your vehicle.