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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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$299.00

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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$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 Cx204v 4-Ch 70V 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. With each channel direct-driving

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$1599.00

Fryette G-2502-S Two/Fifty/Two Tube Stereo Power Amplifier
"A dual-channel 50-watt tube workhorse with sumptuous tone, excellent dynamic range and road-tested reliabilitythe small-but-mighty Fryette Two/Fifty/Two Master-Built Stereo Power Amplifier is a dual channel 50-watt workhorse featuring a pair of premium m

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$1699.00

Fryette G2902s Two/Ninety/Two 90Wx2 Tube Guitar Power Amp
"A stereo power amplifier with wide-open dynamic delivery, powerful low-end response and road-tested reliabilitythe Fryette Two/Ninety/Two Stereo Power Master-Built Amplifier has proven itself to be the standard for tube power performance, not only in its

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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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$1930.00

Qsc Cx108v 8Ch 70V Power Amp
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$2120.00

Qsc Cx902 Stereo Power Amp
"The QSC CX902 is a two-space lightweight power amp equipped with exclusive PowerLight switch-mode power supply technology for high performance and compact size. It is a 21lb powerhouse that will easily run a pair of full range professional speaker cabine

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$2120.00

Qsc Cx1202v Stereo Power Amp
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$1770.00

Qsc Cx702 Stereo Power Amp
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$2995.00

Benchmark Ahb-2 Power Amplifier Silver Rack Mount
"Winner of the EAN ""Best Gear of 2014"" award, the AHB-2 has ushered in a new benchmark in professiona audio monitoring amplification and in audiophile playback. It presents an uncompromising standard in high fidelity, low-noise, critical listening power

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$1090.00

Qsc Cx302 100W Stereo Power Amp
"The new CX Series power amplifiers are designed to meet the needs of sound contractors, venue managers or institutional physical plant managers. These compact, powerful amps combine QSC's PowerWave technology with features that meet the requirements of f

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$2100.00

Qsc Cxd4.3 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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$2340.00

Qsc Cx1102 Stereo Power Amp
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$599.99

Yamaha Px5 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 500W x 2 at 8 ohms and 800W x 2 at 4 ohms, the PX5 has plenty of punch to satisfy your p

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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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