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Thursday, December 12th 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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151.50

Electro-Harmonix 44 Magnum 44W Guitar Power Amplifier
"The Electro-Harmonix 44 Magnum guitar amp provides 44W of clean and natural power and also delivers true amplifier overdrive at the turn of a knob. From your pocket to the stage, the E-H 44 Magnum is a perfect gigging and practice amp. Despite being desc

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1079.00

Crown Xti 4002 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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1949.00

Crown Xti 6002 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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2080.00

Qsc Cx168 8-Ch Low-Z Power Amplifier
"The CX Series amplifiers are designed to meet the specialized needs of sound contractors. Featuring PowerLight switch mode power supply technology and features like gain control security panels and 70 volt direct models. Providing 140 W/CH into 4 ohms an

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199.95

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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2149.99

Qsc Pld4.5 Multi-Channel System Processing Amplifier
"The QSC PLD Series represents a revolutionary advancement in amplifier technology and innovation. Designed specifically for the needs of portable and production sound system users, PLD provides efficient, robust and extraordinarily high fidelity power to

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1149.99

Qsc Pld4.2 Multi-Channel System Processing Amplifier
"The QSC PLD Series represents a revolutionary advancement in amplifier technology and innovation. Designed specifically for the needs of portable and production sound system users, PLD provides efficient, robust and extraordinarily high fidelity power to

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879.99

Qsc Gxd 8 Professional Power Amplifier
"Lightweight, powerful and affordable are the chief defining characteristics of the QSC GXD series amplifiers. The GXD 8 is sure to become a favorite with bands, DJs and sound reinforcement professionals of all kinds.High peak output power with up to 1600

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899.99

Radial Engineering Headload Guitar Amp Load Box 4 Ohms
"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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1840.00

Qsc Cxd4.2 Multi Channel Dsp Amplifier
"Designed for System Integrators, CXD Series Processing Amplifiers represent a revolutionary advancement in technology and innovation. Featuring Flexible Amplifier Summing Technology (FAST), advanced DSP and loudspeaker management, next-generation Class D

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339.00

Crown Xls1002 2-Channel 350W Power Amplifier With Onboard Dsp
"The XLS Series has been a popular sound reinforcement solution since its introduction. It is aimed at the working musician who needs reliability, affordability and quality in a power amplifier. The XLS1002 is part of the latest generation of XLS amplifie

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649.00

Crown Xls2502 775W Power Amp With Onboard Dsp
"The XLS Series has been a popular sound reinforcement solution since its introduction. It is aimed at the working musician who needs reliability, affordability and quality in a power amplifier. The XLS2502 is part of the latest generation of XLS amplifie

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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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1349.99

Engl Tube Poweramp E810/20
"This amazing stereo tube poweramp with EL84 power tubes delivering 2 x 20 watts with two poweramp channels left and right comes in a very compact unit through one rack unit height only. Absolute authentic tube sound due to fully tube technology featuring

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169.99

Radial Engineering Shotgun 4 Channel Amp Driver
"The Shotgun is a compact guitar-level signal buffer designed to drive up to four amplifiers simultaneously and fit nicely on any pedalboard. It features two inputs with a switching jack on input-2 that - when connected - changes the architecture from a 1

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1600.00

Qsc Cx404 4-Ch Low-Z Power Amplifier
"The CX Series amplifiers are designed to meet the specialized needs of sound contractors. Featuring PowerLight switch mode power supply technology and features like gain control security panels and 70 volt direct models. Providing 400 watts per channel i

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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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