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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$499.00 Cerwin-Vega Cv-2800 Power Amplifier "The Cerwin Vega CV-2800 is a rugged, 2U rackmountable, state-of-the-art 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, signa MORE... | $229.99 Behringer A500 600W Reference-Class Studio Power Amplifier "The Behringer A500 600W Reference-Class Studio Power Amplifier embodies true audiophile-grade performance, delivering 2 x 300 watts into 4 ohms or 600 watts into 8 ohms bridged. The overhead keeps you on the safe side, and the Behringer A500's advanced c MORE... | $419.99 Yamaha P2500s Dual Channel Power Amp "The Yamaha P2500S Dual Channel Power Amp is equippped with a specially designed circuit tailored to the response of Club Series speakers. The P-Series amps deliver pro-quality power in a wide range of configurations, and are perfect for mating with the p MORE... | $529.99 Yamaha P3500s Dual Channel Power Amp "The P-Series amplifiers deliver pro-quality power in a wide range of configurations, and are perfect for mating with the popular Club Series speakers, as each model's power signal is tuned via YS processing to the needs of Club Series speakers. All model MORE... |
$629.99 Yamaha P5000s Dual Channel Power Amp "The Yamaha P5000S Dual Channel Power Amp is designed for big power output. It will deliver pro-quality power in a wide range of configurations. It's perfect for mating with the popular Club Series speakers, as its power signal is tuned via YS processing MORE... | $749.99 Yamaha P7000s Dual-Channel Power Amp "The Yamaha P7000S Dual-Channel Power Amp gives you clean power and low weight. The P-Series amps deliver pro-quality power in a wide range of configurations, and are perfect for mating with the popular Club Series speakers, as each model's power signal i MORE... | $749.99 Qsc Plx1104 Professional Power Amplifier "The compact PLX1104 power amplifier brings the same performance and technology as the rest of QSC's PLX2 Series to applications that don't require bridged or two-ohm operation. Designed to power one or two speakers from each amplifier channel (4-ohm mini MORE... | $2499.99 Engl Tube 100W Stereo Poweramp "A new dimension of power, 2 built-in rack units featuring the Engl sound trademarks to discover new sonic experiences. 100 watts per side, 6L6GC driven including adjustable Depth Boost for low punch sounds and eternal headroom to power your rack system.G MORE... |
$1524.99 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 MORE... | $969.99 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 MORE... | $829.99 Peavey Pv 3800 Power Amplifier "Add a 3,800W PV 3800 amp to your Bi-Pack system for a tri-amped system! The highest-power PV Series power amp utilizes a crossover specially tailored for subwoofers and the high power necessary to drive them. Load Fault Correction circuitry along with th MORE... | $599.99 Peavey Pv 2600 Power Amp "The Peavey PV 2600 Power Amp is a 2u rackmount unit. 2 x 900W RMS @ 4 ohms, 540W RMS @ 8 ohms, or 1800W RMS bridged mono. XLR, 1/4"" and barrier strip inputs with DDT compression system, binding post and Speakon output connectors." MORE... |
$1399.99 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 MORE... | $399.99 Qsc Rmx 850 Power Amp "The QSC RMX 850 Power Amp combines their rugged high-output designs with the latest circuit technology to deliver unmatched performance at a breakthrough price. The RMX amps require only 2 rackspaces and feature 1/4"" TRS, XLR, and barrier strip balance MORE... | $749.99 Qsc Rmx 2450 Power Amp "In the QSC RMX 2450 Power Amp, QSC has combined their rugged high-output designs with the latest circuit technology to deliver unmatched performance at a breakthrough price. RMX power amps require only 2 rackspaces and feature 1/4"" TRS, XLR, and barrier MORE... | $649.99 Qsc Rmx 1850Hd Power Amp "The QSC RMX 1850HD Power Amp delivers 360W per channel into 8 ohms, 600W into 4 ohms, 900W into 2 ohms, and a whopping 1,800W into 4 ohms bridged. High-current toroidal transformers for greater 2-ohm power and low noise. Independent use-defeatable clip l MORE... |
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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