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Sunday, September 22nd 2019.

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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1049.99

Qsc Plx1802 Professional Power Amplifier
"The PLX1802 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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449.99

Qsc Gx5 Stereo Power Amplifier
"The QSC GX5 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers, headed by Pat Quilter, have optimized output and appearance of the rackmountable GX5 while reduc

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1549.00

Engl E840/50 Tube 2X50w Stereo Poweramp
"The Engl 840 is one very impressive 2 x 50 watt tube power amp. If you like the rich harmonic tone of 5881 power amp tubes, the 840/50 should be your first choice. It delivers a perfect match of attack & power to give your rack system the headroom that i

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349.99

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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1499.99

Qsc Plx3602 Professional Power Amplifier
"The PLX3602 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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899.99

Peavey Ipr2 5000 Power Amp
"Part of Peavey's new IPR Series, the IPR2 5000 Power Amp utilizes an advanced design that allowed Peavey engineers to dramatically reduce weight (less than 7lb) while increasing output power, reliability, and thermal efficiency. The rackmount power amp h

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509.00

Crown Xti 1002 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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769.00

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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149.95

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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599.99

Peavey Ipr2 3000 Power Amp
"The IPR2 3000 power amplifier is 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, r

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1090.00

Qsc Cx302v Stereo 120V Power Amp
"The CX302V is designed to meet the needs of sound contractors. Featuring the PowerLight switch mode power supply and features like gain control security panels, the CX302V allows you to set it and forget it. All models feature DataPorts for integration w

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169.95

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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1770.00

Qsc Cx602v Stereo Power Amp
"The QSC CX602V power amp is a two-space stereo power amp with 550W output per channel with both outputs driven at 8 Ohms. It features 1-dB detented gain controls for fast and accurate gain settings,active inrush limiting that eliminates AC inrush current

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1600.00

Qsc Cx254 4Ch Power Amp
Save BIG when you buy today!

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649.99

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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849.99

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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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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