Harman Kardon HK970 Amplifier
November 29, 2007
An amplifier is generally used to convert lower signal strength to higher signal strength while connected to an audio device. The Harman Kardon HK970 Amplifier comes with a stereo channel that is designed to give out a stereo quality sound to the listener. Weighing to a weight of 10.2 kg it has the dimensions as 44.1 x 11 x 38.9 centimetres. It uses an output power of 140 Watts for its performance.
Now lets look in detail what makes this Amplifier from Harman Kardon worth buying?
The calculated continuous Average Power (FTC) per channel is 2 x 70W @ 80 Ohm and 2 x 100W @ 4 Ohms and the Frequency Response of (1W + 1/3 dB) is 10Hz – 170 kHz. The signal to noise ratio or the IHF –A is found to be 109 dB. With a ± 75 Amps of HCC or High Instantaneous Current Capability it has a Power Consumption of 345W max. For its performance it requires AC 220 – 240 V/50 Hz. As mentioned earlier it uses a Stereo Sound Output with a Response band width of 10 – 170000 Hz. Now to add to its feature Harman Kardon Amplifier has a remote control that uses infrared and it’s a Universal Remote controller
This Harman Kardon HK970 Stereo Amplifier has 2 output channels and the input impedance of this amplifier is 43 Ohm. Check out its output details for a better knowledge of its performance.
• 70 Watt - 8 Ohm - 20 - 20000 Hz - THD 0.07% - 2 channel(s) ( main )
• 100 Watt - 4 Ohm - 20 - 20000 Hz - THD 0.3% - 2 channel(s) ( mains)
Some of the other features that can be look upon on this Harman Kardon HK970 Amplifier are its Bass control, Treble control and it’s Tone Control. It has a built in fluorescent display to add to its appearance and for your convenience. The additional features of the device are A-B speaker Switch, volume control and balance control and this device is again supported with devices like CD recorder, amplifier and CD player.
Yamaha RX-V659 titan AV Receiver/Amplifier
November 26, 2007
Yamaha is a world wide popular manufacturing company has introduced Yamaha RXV 659 titan AV Receiver/Amplifier in the UK market. The user-friendly 
product has come with the ability to amplify the actual audio by multiplying its audio output. You can enjoy realistic audio effects with certain features like Dolby Digital EX 6.1 sound, Radio compatibility, 8 ohms impedance, front a/v input, 8 analogue audio inputs and compact design.
Yamaha AV Receiver/Amplifier is designed in such a manner to support distinct sound formats namely:
• Dolby Digital EX 6.1
• Dolby Prologic
• Dolby Prologic II
• DTS ES 6.1
• Dolby Digital 5.1
• DTS 5.1
Manufacturer has made this product with the weight of 12.3 kilo grams. You can get the frequency of AM as well as FM. Users can enjoy music with the help of 40 radio presets. The sound amplifying unit has come with 7.1 channel input and 5.1 channel input. It is simple to connect your subwoofer with the product with the help of subwoofer output. The compact dimensions of the amazing device are made as:
• 43.5 cm Width
• 17.1 cm Height
• 42.1 cm Depth
There are totally 7 audio outputs and each has the potential to offer audio output up to 100 watts. Yamaha RX-V659 titan AV Receiver requires 8 ohm impedance to function properly. It has been availed with front A/V input. The following are available audio inputs and outputs of the product namely:
• 8 Analogue audio inputs
• 2 Digital coaxial audio inputs
• 4 Digital optical audio inputs
• 3 Analogue Audio outputs
• 1 Digital optical Audio output
List of Video inputs and Video outputs of the product
• 3 Components Video inputs
• 5 Composite Video inputs
• 5 S-Video Video inputs
• 1 S-Video Video output
Sony STR-DG510 B CEK AV Amplifier
November 24, 2007
Amplifier is a dedicatedly designed electronic product to amplify audio output of any music system. Lots of manufacturing company has marketed distinct amplifiers with distinct audio output capabilities. Sony is one of the favourite brands of the UK people which introduce Sony STR-DG510 B CEK AV Amplifier with stunning sound effects.
• It has come with the ability to receive audio as well video. That’s why it is also known as “Audio Video Receiver” in short “AV receiver”. The main purpose of the product is to amplify the original sound output of a music system or DVD player or CD player or Home theatre system.
• To support the product, your loudspeaker must have 5.1 configurations.
• You can enjoy audio output up to 450 watts from the unit.
• There are 2 analogue inputs and 2 optical inputs.
• Make use of a Coaxial input and 2 “High Definition Media Interface” (HDMI).
• Users can enjoy Dolby Digital as well as DTS audio effects by using the device.
• HDMI interface which is different from HDMI input is also present in the unit. This interface is used for connectivity.
• Totally there are 5 channels to amplify the audio output.
• The height and width of the device is measured as 157.5 x 430 mm.
• The manufacturer has designed Sony Amplifier with the compatibility to support distinct audio formats like:
1. Dolby ProLogic II
2. Dolby Digital
3. Dolby ProLogic
Denon PMA500AE Amplifier Review
November 22, 2007
Denon proudly markets its new product named as Denon PMA-500AE Amplifier in the UK market with the compatibility to offer high quality sound effects. It is availed anywhere in the UK stores with features like HC single push-pull circuit, large power capacity, wide dynamic range playback, microprocessor stop mode, phono equaliser amp, IR remote control, 5 inputs and 3 outputs etc.
• The device amplifies sound using two channels each offers audio output up to 70 watts.
• Denon has equipped a unique element called “High Current (HC) single push-pull circuit”
which is needed for balancing power?
• The power circuit of the device has been designed with large capacity to support more audio output.
• You can enjoy an advantage called “dynamic range playback”. This feature allows the device to interact even with high-graded audio sources.
• The appliance has come with the compatibility to offer clear audio.
• You can choose “Microprocessor stop mode” for enhancing the quality of sound.
• It offers phono equaliser amp to connect an analogue record player with this product.
• List of controls in Denon Amplifier:
• Bass
• Treble
• Loudness
• The available inputs and outputs are as follows:
• Phono input
• 3 line level
• 2 tape loop
• 2 independently switchable speaker outputs
• Headphones
• The manufacturer offers a remote control which has come with the ability to handle distinct devices like:
• Denon CD players
• Cassette decks
• Tuners
• A remote control with IR feature is provided for the users which needs battery.
• You can buy the product with the dimensions as:
• 434 mm width
• 120 mm height
• 337 mm depth
• 6.5 kilo grams weight
• It comes in black or silver colour finish and both gives the device a very attractive look.
Basic Thing to Know About Amplifier
November 14, 2007
Amplifier is an electronic device which increases the sound effect of an electronic unit with speakers. Before you purchase an amplifier take time to think over the different kinds and feature available in an amplifier. Here are few tips to help you to select the right kind of amplifier for the sound you need. First you must know that sound comes out of an amp due to the chain of sound. You will achieve effective sound only if the links provided in chain of sound are equally strong. When you go to a store to purchase an amplifier see if your selected amplifier has all the features in it.
Amplifier’s features
• Input feature available in an amplifier is used to connect the cables
of guitar.
• Amplifier has power button to turn it off and turn on.
• Master volume supports the sound in amplifier.
• Amplifier has speaker or speaker out feature from where the sound comes
out.
Links of the Chain of sound
• Amplified sound of an instrument is determined by its accurate timing. Clean
intonation, optimal handling, and balanced paying technique which come from
the guitarist.
• Amplifier will not improve its sound, if the guitar is poorly stringed.
• Pickup is the next link of the chain of sound. This is to check if the amplifier connected guitar can produce the original tone of a guitar.
• An amplifier has other stage which contributes their parts to the sound such as preamp, effect loop, speakers, equalizer and power amps.
When you buy an amplifier consider the size and its wattage. If you choose high wattage, it will be difficult to carry if the size of the amplifier is too large. For this reason you may have to buy a smaller and weaker amplifier.
The size of an amplifier depends on your trip. In case of wattage, remember
that doubling the wattage only produces maximum volume. Wattage increased in
10db will perceive as doubling the volume. A good comparison with Vox DA5, double
wattage, speaker configuration and DA10 for double wattage sound.
