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Learn the basics of power amplifier applications and connections, plus criteria for choosing the right amplifier for your PA sound system.

A home stereo system built around an integrated amplifier is perfect for a serious music lover. Learn what to look for as you shop.

This step-by-step guide will help you make sure that your amps and subs are evenly matched and work well together. We explain how to select one to go with the other.

New marine speakers in your boat will give you an immediate upgrade in sound quality, but you'll also need a marine amplifier to get the best sound over open water.

Car amplifier buying guide
by Buck Pomerantz

How much power and how many channels are right for you? This guide will help you choose the right amplifier for your car's sound system.

Video: how to choose an amplifier
by Zak Billmeier, Ken Nail

Here are some major points to consider and features to look for when choosing a new amplifier, like how many channels, or how much power it needs.

Video: car amplifier power
by Zak Billmeier, Ken Nail

We describe the basics of deciding how much power an amplifier should have when you're trying to match it to your speakers or subwoofers.

Learn how to incorporate Sonos wireless multi-room audio into a hard-wired system that features in-wall, ceiling, and outdoor speakers.

Video: car amplifier features
by Zak Billmeier, Ken Nail

This video describes some of the common features you should look for when you're shopping for an amp, like a high-pass filter or a bass boost.

Video: car amplifier channels
by Zak Billmeier, Ken Nail

How many channels you'll need for your amp depends on how you intend to use it, and with how many speakers or subs.

Bring out all of your music's emotional excitement, impact, and fine detail by adding an amplifier. This article explains which amplifier is the best for the job.

A line output converter lets you connect an amplifier to a factory stereo. In this article, we answer the most common questions about line output converters.

Confused about wiring your subs and picking the right amplifier? Crutchfield will get you on the fast track to big bass with this simple guide.

Three Crutchfield advisors listened to ten tracks from various musical genres to hear the difference a subwoofer makes when listening to music in a car.

Marine stereos are available in a variety of shapes, sizes, and configurations. Our handy guide will help you find the receiver that's right for your boat.

Whether you only need a single mic and a speaker or a full kit for your band, it pays to know how a PA system works. This article explains each piece of the system.

Golf carts aren't just for the "back nine" anymore -- they're almost as likely to be seen driving around the neighborhood. Your cool cart deserves a stereo to match.

From playing music to delivering surround sound thrills, today's home theater receivers offer more than ever. Learn how to find the one that's best for you.

These bolt-in audio component kits from Rockford Fosgate will make your Polaris RZR rock. They let you upgrade your sound without cutting or modifying your RZR.

Marine radio buying guide
by Tim Sprinkle

From sunlight to rain to extreme temperatures, your boat's marine audio system has to endure a lot of abuse. This article will help you choose the right marine stereo.

Amps make music fun
by Buck Pomerantz

When you add an amp to your system, the sound becomes higher, wider, and more realistic — like the band's in the car and you're in the front row.

All about subwoofers
by Buck Pomerantz

All the information and links you'll need to plan, install, tune, and enjoy a subwoofer system in your car or truck.

Upgrade your car's sound
by Buck Pomerantz

Factory stereo systems leave a lot to be desired. The four upgrade systems we discuss in this article improve the factory sound of different vehicles in different ways.

Whether you're fishing, waterskiing, or just cruising around, boating is even more enjoyable when you have a quality marine audio system to provide the music.

This article will help you figure out how to start building the car stereo system that's right for you, by deciding where the weakness is in your current system.

FUSION is a company dedicated to bringing high-performance audio to the marine market. That's why their marine audio products are "designed from the water up."

Life with a factory stereo
by Charlie Pastorfield

Many new vehicles make it difficult to install a new stereo. This article covers some of your options for improving the sound without changing the stereo.

Video: Upgrading Your Factory Stereo, part 2
by Robert Ferency-Viars, Ken Nail

In this short video, Crutchfield experts show how a fellow employee created a high-performance car audio system without replacing his vehicle's factory stereo.

Building a great car stereo doesn't have to be an "all or nothing" proposition. With a plan and a budget, you can build a great audio system one step at a time.

When it's time to upgrade your boat's audio system, it's important to look for marine-rated stereo equipment that can stand up to life on the water.

Different amps with the same wattage ratings can have wildly different prices because not all watts are created equal - some are better due to the amp's build quality.

The mobile audio/video section of the Crutchfield Labs lets our writers, researchers, and advisors get hands-on experience with the latest car audio products.

Bill Becker, founder and CEO of BDI, talks about special features of the BDI Mirage 8222 audio/video cabinet, designed to hold and hide your audio components.

Bill Becker, founder and CEO of BDI, talks about the special features of the BDI Valera audio/video furniture line. The open design keeps your components visible, and

Bill Becker, the founder and CEO of BDI, talks about their Avion audio/video furniture line and the improvements they made with Series II. Avion is perfect for anyone

Video: Focal FPS amplifiers
by Zak Billmeier

For the best amplified sound in their cars, audiophiles turn to Focal. This brief video introduces the Focal FPS series of amplifiers.

Sony's efficient GS car amplifiers give you clean, effective power to make your car audio system sing. There are two GS models: a 4-channel, and a mono subwoofer amp.

Kenwood Excelon line of amplifiers - three models featuring a small footprint, clean design, and covered by a reassuring 2-year warranty.

Alpine's V-Power car amplifiers are smaller than ever, and they employ smart digital technology that makes them incredibly versatile.

Pioneer's versatile 2013 car amplifiers help you get needed power to your speakers. They're compact, powerful, and even 1-ohm stable so it's easy to match subs.

Car amplifiers FAQ
by Buck Pomerantz

Our Amplifier FAQ answers many common questions like: How can I add an amp to my system? Where should I mount it? What wiring do I need? What size fuse and power wire?

Car amplifiers glossary
by Crutchfield Writing Team

Car amplifier audio terms - like watts, volts, and efficiency - are explained.

Check out this overview of a typical installation to see the steps involved when you install an amplifier in your vehicle.

In this video, we'll help you overcome one of the hardest parts of amplifier installation: how to get your amp's power wire through the vehicle's firewall.

Amplifier wire gauge chart
by Buck Pomerantz

Need to know know which size of wire you should use when installing an amplifier? Use our handy cable gauge chart to find out.

Amplifier installation guide
by Crutchfield Writing Team

Here's a step-by-step guide to installing a car amplifier, including troubleshooting tips when things don't work perfectly.

The NAD Masters Series M32 stereo integrated amplifier features NAD's DirectDigital circuitry, which shortens the signal path between amp and speaker for clean sound.

The McIntosh MC301 monoblock amplifier delivers its massive power to any speaker. With a dedicated amp for each speaker, you get maximum separation and soundstaging.

The MC152 stereo power amplifier gives you the warm sound you'd expect from McIntosh, and the amp's output transformer delivers its full rated power to any speaker.

With built-in Wi-Fi, a host of digital source options, and robust amplification, the NAD D 7050 amplifier can bring all your music together to make your speakers sing.

Top-quality power wire is key to getting the best performance out of your amplifier. Kicker power wire transfers power efficiently to your amp for best performance.

Make your music sound lively and vital with a Sound Ordnance amplifier. Watch this Crutchfield video to see what these rugged, value-packed amplifiers have to offer.

One of our employees shares the excitement of having an amplifier in her car for the first time. We installed the Rockford Fosgate Punch P400-4 amplifier in her car,

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