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2100 Watt DJ Amplifier - Adkins Pro Audio
2100 Watt DJ Amplifier - Adkins Pro Audio
Regular Price: $219.98
Your Price: $109.99

This Amplifier will rock your socks off! more info
4100 Watt DJ Amplifier - Adkins Pro Audio
4100 Watt DJ Amplifier - Adkins Pro Audio
Regular Price: $299.98
Your Price: $149.99

This Amplifier will rattle your more info
6100 Watt DJ Amplifier - Adkins Pro Audio
6100 Watt DJ Amplifier - Adkins Pro Audio
Regular Price: $399.98
Your Price: $199.99

This Amplifier will rattle your walls! more info
Peavey PV 900 Power Amp
Peavey PV 900 Power Amp
Regular Price: $659.98
Your Price: $329.99

Power AND performance! more info
Peavey PV 3800 Power Amplifier
Peavey PV 3800 Power Amplifier
Regular Price: $1,659.98
Your Price: $829.99

Designed to power subwoofers. more info
Crown XLS1002 DriveCore Series Power Amp
Crown XLS1002 2-Channel 350W Power Amplifier with Onboard DSP
Regular Price: $499.00
Your Price: $299.00

Order today and bring Crown quality and reliability into your PA system. more info
Crown XLS2002 2-Channel 650W Power Amplifier with Onboard DSP
Crown XLS2002 2-Channel 650W Power Amplifier with Onboard DSP
Regular Price: $899.00
Your Price: $459.00

Order today and bring Crown quality and reliability into your PA system. more info
Crown XLS2502 2-Channel 775W Power Amplifier with Onboard DSP
Crown XLS2502 2-Channel 775W Power Amplifier with Onboard DSP
Regular Price: $1,099.00
Your Price: $559.00

Order today and bring Crown quality and reliability into your PA system. more info
Technical Pro 4200 Watt Professional Stereo Amplifier
Technical Pro 4200 Watt Professional Stereo Amplifier
Regular Price: $479.98
Your Price: $239.99

Technical Pro 4200 Watt Professional Stereo Amplifier more info
Pyle Pro 3000 Watt Karaoke Amplifier/Mixer w/FM Tuner
Pyle Pro 3000 Watt Karaoke Amplifier/Mixer w/FM Tuner
Regular Price: $339.98
Your Price: $169.99

3000 Watts Hybrid Pre-Amplifier w/AM/FM Tuner more info
Technical Pro Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card
Technical Pro Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card
Regular Price: $269.90
Your Price: $134.95

Technical Pro Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card more info
Pyle Pro 2000W Hybrid Pre-Amplifier AM/FM Tuner
Pyle Pro 2000W Hybrid Pre-Amplifier AM/FM Tuner
Regular Price: $289.98
Your Price: $144.99

Pyle Pro 2000W Hybrid Pre-Amplifier AM/FM Tuner more info
Pyle Pro P3002AI 3000W AM/FM Receiver Amplifier with iPod Dock
Pyle Pro P3002AI 3000W AM/FM Receiver Amplifier with iPod Dock
Regular Price: $379.98
Your Price: $189.99

Pyle Pro P3002AI 3000W AM/FM Receiver Amplifier with iPod Dock more info
Technical Pro Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card and Bluetooth
Technical Pro 1500W Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card and Bluetooth
Regular Price: $269.90
Your Price: $134.95

Technical Pro Digital Hybrid Amplifier/Preamp/Tuner with USB SD Card and Bluetooth more info
Technical Pro Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth
Technical Pro 2500W Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth
Regular Price: $399.98
Your Price: $199.99

Technical Pro Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth Compatibility, 2500 Watts more info
Technical Pro Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth
Technical Pro 3500W Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth
Regular Price: $439.98
Your Price: $239.99

Technical Pro Digital Hybrid Amplifier / Preamp/ Tuner with USB and SD Card Inputs with Bluetooth Compatibility, 3500 Watts more info
   
 
When people refer to "amplifiers," they're usually talking about stereo components or musical equipment. But this is only a small representation of the spectrum of audio amplifiers. There are actually amplifiers all around us. You'll find them in televisions, computers, portable CD players and most other devices that use a speaker to produce sound.

In this article, we'll see what amplifiers do and how they do it. Amplifiers can be very complex devices, with hundreds of tiny pieces, but the basic concept behind them is pretty simple. You can get a clear picture of how an amplifier works by examining the most basic components.

Sound is a fascinating phenomenon. When something vibrates in the atmosphere, it moves the air particles around it. Those air particles in turn move the air particles around them, carrying the pulse of the vibration through the air. Our ears pick up these fluctuations in air pressure and translate them into electrical signals the brain can process.

Pump it Up
In the last section, we saw that an amplifier's job is to take a weak audio signal and boost it to generate a signal that is powerful enough to drive a speaker. This is an accurate description when you consider the amplifier as a whole, but the process inside the amplifier is a little more complex.
In actuality, the amplifier generates a completely new output signal based on the input signal. You can understand these signals as two separate circuits. The output circuit is generated by the amplifier's power supply, which draws energy from a battery or power outlet. If the amplifier is powered by household alternating current, where the flow of charge changes directions, the power supply will convert it into direct current, where the charge always flows in the same direction. The power supply also smoothes out the current to generate an absolutely even, uninterrupted signal. The output circuit's load (the work it does) is moving the speaker cone.

The input circuit is the electrical audio signal recorded on tape or running in from a microphone. Its load is modifying the output circuit. It applies a varying resistance to the output circuit to re-create the voltage fluctuations of the original audio signal.
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