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An audio power amplifier (or power amp) is an electronic amplifier that amplifies low-power electronic audio signals such as the signal from radio receiver or electric guitar pickup to a level that is high enough for driving loudspeakers or headphones. Audio power amplifiers are found in all manner of sound systems including sound reinforcement, public address and home audio systems and musical instrument amplifiers like guitar amplifiers. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers. The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification of the signal (this is particularly associated with record turntable signals, microphone signals and electric instrument signals from pickups, such as the electric guitar and electric bass), equalization (e.g., adjusting the bass and treble), tone controls, mixing different input signals or adding electronic effects such as reverb. The inputs can also be any number of audio sources like record players, CD players, digital audio players and cassette players. Most audio power amplifiers require these low-level inputs, which are line level. While the input signal to an audio power amplifier, such as the signal from an electric guitar, may measure only a few hundred microwatts, its output may be a few watts for small consumer electronics devices, such as clock radios, tens or hundreds of watts for a home stereo system, several thousand watts for a nightclub's sound system or tens of thousands of watts for a large rock concert sound reinforcement system. While power amplifiers are available in standalone units, typically aimed at the hi-fi audiophile market (a niche market) of audio enthusiasts and sound reinforcement system professionals, most consumer electronics audio products, such as clock radios, boomboxes and televisions have relatively small power amplifiers that are integrated into the product.
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Proton D1200 Stereo Power Amplifier
Proton D1200 Stereo Power Amplifier
Price:
699.99 USD
Ends:
Feb 23, 05:10 am
3 Bids
Carver M-500 Magnetic Field 2 Channel Power Amplifier, 250 Watts per Channel
Carver M-500 Magnetic Field 2 Channel Power Amplifier, 250 Watts per Channel
Price:
305.00 USD
Ends:
Jan 27, 06:05 pm
ADCOM GFA 5400 Power Amplifier (super clean)
ADCOM GFA 5400 Power Amplifier (super clean)
Price:
285.00 USD
Ends:
Feb 15, 09:39 pm
Sunbuck 5000W Power Amplifier 5 Channel bluetooth 5.0 Stereo Audio Home LINE Out
Sunbuck 5000W Power Amplifier 5 Channel bluetooth 5.0 Stereo Audio Home LINE Out
Price:
52.42 USD
Ends:
Feb 04, 05:37 pm
3 Bids
Adcom GFA-5500 2 Channel Power Amplifier
Adcom GFA-5500 2 Channel Power Amplifier
Price:
376.42 USD
Ends:
Jan 25, 09:39 pm
QSC Powerlight 4.0 Power Amplifier 4000w-Good Condition
QSC Powerlight 4.0 Power Amplifier 4000w-Good Condition
Price:
675.00 USD
Ends:
Feb 22, 05:23 pm
ADCOM GFA 555 Power Amplifier
ADCOM GFA 555 Power Amplifier
Price:
550.00 USD
Ends:
Feb 16, 12:14 am
ADCOM 2 Channel Power Amplifier -  Model GFA-555   Very Good Condition
ADCOM 2 Channel Power Amplifier -  Model GFA-555   Very Good Condition
Price:
500.00 USD
Ends:
Feb 23, 09:38 pm
Sunbuck 2500W HiFi bluetooth Power Amplifier 5 Channel Stereo Audio Amp Receiver
Sunbuck 2500W HiFi bluetooth Power Amplifier 5 Channel Stereo Audio Amp Receiver
Price:
52.99 USD
Ends:
Jan 29, 02:06 am
ATI Power Amplifier 1800 3 Channel 1803
ATI Power Amplifier 1800 3 Channel 1803
Price:
825.00 USD
Ends:
Feb 20, 02:20 am
17 Bids
ADCOM GFA 2535 POWER AMPLIFIER AMP STEREO AMP 4 CHANNEL POWER AMPLIFIER EXCELLEN
ADCOM GFA 2535 POWER AMPLIFIER AMP STEREO AMP 4 CHANNEL POWER AMPLIFIER EXCELLEN
Price:
180.50 USD
Ends:
Jan 27, 02:18 am
B&K  AV5000 Series II Stereo Power Amplifier
B&K AV5000 Series II Stereo Power Amplifier
Price:
585.00 USD
Ends:
Feb 21, 02:52 pm
2 Bids
ANTHEM PVA-2 STEREO POWER AMPLIFIER 105 watts x 2 EXCELLENT SOUND
ANTHEM PVA-2 STEREO POWER AMPLIFIER 105 watts x 2 EXCELLENT SOUND
Price:
177.50 USD
Ends:
Jan 28, 04:14 am
Sunbuck 2500W bluetooth 5.0 HiFi Power Amplifier 2/5 Channel Home Stereo Audio
Sunbuck 2500W bluetooth 5.0 HiFi Power Amplifier 2/5 Channel Home Stereo Audio
Price:
33.99 USD
Ends:
Jan 29, 03:44 am
B&K ST 1200 Series II AMPLIFIER
B&K ST 1200 Series II AMPLIFIER
Price:
325.00 USD
Ends:
Feb 21, 02:31 pm
Mini HiFi Digital Stereo Audio 2 Channels Amplifier Power Amp DC 12V FM Car Home
Mini HiFi Digital Stereo Audio 2 Channels Amplifier Power Amp DC 12V FM Car Home
Price:
16.98 USD
Ends:
Feb 17, 08:06 am
Crown K2 Balanced Current Stereo Power Amplifier 800 Watts per Ch. @ 4 ohms #1
Crown K2 Balanced Current Stereo Power Amplifier 800 Watts per Ch. @ 4 ohms #1
Price:
429.99 USD
Ends:
Feb 25, 04:22 pm
0 Bids
ADCOM GFA-555 POWER AMPLIFIER
ADCOM GFA-555 POWER AMPLIFIER
Price:
350.00 USD
Ends:
Jan 27, 03:00 am
Adcom GFA 2535 4/3 Channel Power Amplifier
Adcom GFA 2535 4/3 Channel Power Amplifier
Price:
350.00 USD
Ends:
Feb 23, 04:57 am
17 Bids
Adcom GFA-555 II amplifier
Adcom GFA-555 II amplifier
Price:
385.00 USD
Ends:
Jan 25, 09:59 pm
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