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Wednesday, September 19th 2018.

Power Amplifiers

Guitar Musician has a full compliment of power amps and amplifiers by the biggest brand name manufacturers in the music industry. Our lineup includes guitar amps, bass amps, acoustic guitar amps, keyboard amps as well as electric guitar amps and live sound power amplifiers all for the best prices on the net. Famous names like Fender, Peavey, Crate, Marshall, Behringer, Line 6, Roland, Yorkville, SWR, Ampeg, Hiwatt and others.

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$449.99

Yamaha Px3 Power Amplifier
"This advanced power amplifier combines intelligent processing with high output to meet the requirements of a vast range of sound reinforcement environments. Boasting 300W x 2 at 8 ohms and 500W x 2 at 4 ohms, the PX3 has plenty of punch to satisfy your p

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$749.00

Dynacord L1800fd Dsp Powered 2X950w Amplifier
"Providing two channels of 950W, Class-D output @ 4 Ohms, this professional live performance DSP amplifier features FIR Drive technology, true 2 Ohm stability and rock-solid reliability. The Dynacord L1800FD boasts intuitive system control software, which

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$699.99

Yamaha Px8 Power Amplifier
"This advanced power amplifier combines intelligent processing with high output to meet the requirements of a vast range of sound reinforcement environments. Boasting 800W x 2 at 8 ohms and 1050W x 2 at 4 ohms, the PX8 has plenty of punch to satisfy your

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$1099.99

Qsc Plx2502 Professional Power Amplifier
"The PLX2502 power amplifier is an excellent choice for users who need to drive up to four loudspeakers from each amplifier channel (2-ohm loading), or when extremely high power bridged mono operation is required. Features built-in subwoofer processing, f

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$299.99

Qsc Gx3 Stereo Power Amplifier
"The QSC GX3 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers have optimized output and appearance of the GX3 power amp while reducing raw material cost and we

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$499.00

Electro-Voice Q44 Ii Power Amplifier
"The Q44 II power amp from Electro-Voice provides 2 x 450W @ 4 ohms or 2 x 650W @ 2 ohms. It's an excellent choice for small tops and utility loudspeakers, such as ZX1, SX Series, or EVID Series.Dynamic Headroom:Electro-Voice's philosophy is that tonal pe

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$399.00

Cerwin-Vega Cv-1800 Power Amplifier
"The Cerwin Vega CV-1800 is a rugged, 2U rackmountable power amplifier with a highly efficient tunnel cooling system to ensure reliable, cool running operation, 21-position detent level control knobs for easily repeatable settings, signal and clip indicat

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$699.00

Crown Xti2002 Power Amplifier
"When you choose Crown's XTi 2 Series, you're choosing one of the most powerful and innovative amplifiers on the market today. With such innovations as a universal tracking switch-mode power supply and a fully integrated suite of speaker processing tools,

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$1699.99

Qsc Rmx5050a Power Amplifier
"The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 3-rackspace model RMX5050a provides 2500 watts per channel at 2 ohms. It features a compact chassis less than 16"" deep. RMXa amplifiers include a

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$129.95

Gemini Xga-2000 Power Amplifier
"The XGA-2000 amplifier offers clean, reliable power in a durable, lightweight enclosure. If you demand professional amplification performance, the XGA-2000 is perfect for delivering pure, consistent wattage night after night.With 2000 watts of Instant Pe

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$149.95

Gemini Xga-3000 Power Amplifier
"The XGA-3000 amplifier offers clean, reliable power in a durable, lightweight enclosure. If you demand professional amplification performance, the XGA-3000 is perfect for delivering pure, consistent wattage night after night.With 3000 watts of Instant Pe

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$179.95

Gemini Xga-4000 Power Amplifier
"The XGA-4000 amplifier offers clean, reliable power in a durable, lightweight enclosure. If you demand professional amplification performance, the XGA-4000 is perfect for delivering pure, consistent wattage night after night.With 4,000 watts of Instant P

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$599.99

Qsc Gx7 Stereo Power Amplifier
"The most powerful of the GX family of QSC power amps, the QSC GX an ideal power amp for professional entertainers who require maximum performance and portability on a limited budget. The hallmarks of the QSC brand - professional audio quality, meticulous

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$799.99

Qsc Rmx2450a Power Amplifier
"The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 2-rackspace model RMX2450a features output power of 450 watts per channel at 8 ohms. It has a compact chassis less than 16"" deep. RMXa amplifiers

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$349.99

Peavey Ipr2 2000 Power Amp
"IPR2 power amplifier, designed for years of reliable, flawless operation under rigorous use. The groundbreaking IPR2 series utilizes an advanced design that allows Peavey engineers to dramatically reduce weight while increasing output power, reliability

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$899.99

Radial Engineering Headload Guitar Amp Load Box 8 Ohm
"The Headload is a combination load box and attenuator that is capable of handling up to 130-watts RMS of continuous power and peaks of 180 watts. Inserted between the head and cabinet, it allows the guitar amp to be driven hard while reducing the output

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Power Amplifiers - Practical Uses

One important concept in the age of electronic music is the use of the power amplifier. Amplifiers are needed to send the sound created by an instrument out into the air where an audience or the player can hear it. In order to accomplish this, amplifier systems have been invented. There are dozens of different kinds of amplifier systems, from those found in instruments to those found in stereos and public announcement systems. Specific instruments often have an amp that is designed for them, such as a guitar amp, a bass amp, or a keyboard amp.

One of the big differences in each of these kinds of amps is the power it uses. The power is located in the head of the amp, and the places that generate the power used for the amplification system are known as power amps.

Audio power amps are included in combo amps, along with everything else. The power produced is measured in watts, which is the unit used in many electric functions. The more range or power that is needed, the greater the wattage in the power amplifier. The result might be called a high power amplifier. This is useful to know for those musicians who prefer to design their own amplification systems. There are also several major types of audio power amplifiers. Some of the more commonly used are the stereo power amplifier, the mono power amplifier, the solid state power amplifier and the vacuum tube power amplifier just to name a few.

Measuring the power used by amps can be tricky, as there is not a proportional measurement in the power output and the decibel level (dB). Decibels are used as measurements (for the purpose of music) of acoustics, although they also apply to electric functions. Decibels are very small units, and one decibel is roughly equivalent to the smallest change in sound that a human can perceive.

Simply put, doubling the wattage of the power output in power amps will not double the decibel level. Instead, increasing the wattage by two times will increase the decibel level by 3. This is the case no matter what wattage you are doubling, be it 300W to 600W, or 100W to 200W. It is always constant.

For the musician, the measurement of the power amp is important as it directly relates to how well the instrument will be heard over other systems. Most soundboards will include equalization controls which compensate for electronic instruments which require greater power amps, such as keyboards and even basses. As a mid-range instrument, guitar amplifiers do not require such a high power output. However, levels on the power amp of the amplifier hooked up to the guitar need to be adjusted upwards so that the guitar, including solos and rhythms, can be heard over the other instruments. Often, guitar players find that the power setting should create a +3dB in comparison with the other instruments.

Understanding the function of power amps is essential to musicians who play in bands. The power amplifier is what will produce the electric energy necessary for an instrument such as the guitar to be heard over keyboards and drums, without the instruments drowning each other out. Amps should be purchased according to the style of music that you play, and the venue you play in.

 

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