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What does this mean ?

Generally, an amplifier is any device that will use a small amount of energy to control a larger amount of energy. In popular use, the term today usually refers to an electronic amplifier, often as in audio applications. The relationship of the input to the output of an amplifier — usually expressed as a function of the input frequency — is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain.
There are many types of electronic amplifiers for different applications.

One common type of amplifier is the electronic amplifier, commonly used in radio and television transmitters and receivers, high-fidelity ("hi-fi") stereo equipment, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers. Its critical components are active devices, such as vacuum tubes or transistors.
 

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Amplifiers

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Sony TA FE370 Silver 2x70W Amplifier

Sony TA FE370 Silver 2x70W Amplifier

Headphone socket / Remote control (supplied). 2x 70w (4 ohms) integrated amplifier. 5 audio inputs. Built in phono equalizer amplifier (moving magnet). Tone controls ...

 Popcorn Home Shopping c/o eDirectory
£148.50
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Sony STRDE598B

Sony STRDE598B

STRDE598B - Sony STRDE598 Dolby Digital Receiver - Black

 Digital Empire Online
£149.00
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Onkyo TXSR606

Onkyo TXSR606

Onkyo [TXSR606] Onkyo's High definition AV receivers build on the success of the previous model SR605 with enchanced features: Dolby TrueHD, Dolby

 PriceLess Electronics
£395.00
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Sony STRDE598B

Sony STRDE598B

STRDE598B - Sony STRDE598 Dolby Digital Receiver - Black

 Digico.co.uk
£149.00
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Pioneer VSX1017S 1080p Ready Advanced MultiChannel...

Pioneer VSX1017S 1080p Ready Advanced MultiChannel...

Multi-Channel AV Receiver. 1080p Ready. 7 Channel. Phase Control Surround Reciever. Front Stage Surround Advance.

 Digital Direct
£329.01
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Pioneer VSX1018AHS Black 7 Channel AV Receiver with...

Pioneer VSX1018AHS Black 7 Channel AV Receiver with...

Free Mainland UK Delivery Only - Pioneer VSX1018AHS Silver 7 Channel AV Receiver with HDMI, HD Audio Decoding and KURO LINK Main Features     ...

 Electro Centre
£448.00
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Pioneer VSX818VK Black 5 Channel AV Receiver with...

Pioneer VSX818VK Black 5 Channel AV Receiver with...

Free Mainland UK Delivery Only - Pioneer VSX818VK Black 5 Channel AV Receiver with HDMI Switching, iPod Digital and USB-in Main Features   Output Power ...

 Electro Centre
£221.00
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Pioneer PDAV100HD HD AV Converter

Pioneer PDAV100HD HD AV Converter

Free Mainland UK Delivery Only - Connect all your entertainment devices to your KURO TV… with just one cable. The PDA-V100HD is a high definition AV ...

 Electro Centre
£149.00
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Sony STRDG520S 5.1 channel AV Receiver

Sony STRDG520S 5.1 channel AV Receiver

Free Mainland UK Delivery Only - Get amazing 1080p video and 5.1 channels of pristine surround sound. This versatile audio / video receiver will even automatically ...

 Electro Centre
£142.00
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Yamaha RXV363

Yamaha RXV363

RXV363 - Yamaha 5.1 Channel AV Reciever, 500W Total Power Output

 Digital Empire Online
£149.00
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Pioneer VSXLX51 LX Series Receiver with HD Audio...

Pioneer VSXLX51 LX Series Receiver with HD Audio...

Free Mainland UK Delivery Only - Pioneer VSXLX51 LX Series Receiver with HD Audio Decoding, Deep Colour and KURO LINK Main Features       ...

 Electro Centre
£740.00
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Sony STRDG820

Sony STRDG820

Sony [STRDG820] Sony's Latest Home Cinema AV Receiver with 4 HDMI sockets & Auto Caliberation. 4 HDMI 1.3 sockets TrueHD and DTS-HD

 PriceLess Electronics
£239.99
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Sony STRDA1200ESS.CEK ES 7ch receiver featuring,...

Sony STRDA1200ESS.CEK ES 7ch receiver featuring,...

The Sony STRDA1200ES is far easier to set up than the average AV receiver. Even fine adjustments to speaker balance can be carried out precisely and quickly. Like ...

 Multizoneav.com
£246.98
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Yamaha DSPAX563

Yamaha DSPAX563

Yamaha [DSPAX563] Latest 7.1 Channel 630W (90W x 7) Bluetooth Compatibile AV Amplifier Advanced Features 4 SCENE buttons offering greater operating ease

 PriceLess Electronics
£292.99
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Pioneer VSX1018AHK Black 7 Channel AV Receiver with...

Pioneer VSX1018AHK Black 7 Channel AV Receiver with...

Free Mainland UK Delivery Only - Pioneer VSX1018AHK Black 7 Channel AV Receiver with HDMI, HD Audio Decoding and KURO LINK Main Features       ...

 Electro Centre
£448.00
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479 results | Page 1 of 32 | next page