Category Archives: Amplifier

Important Features to Consider When Selecting an Amplifier

AmplifierA home theatre experience is incomplete without a high-end amplifier. What exactly is an amplifier? It’s an electronic device that increases the current, voltage and power of a signal. Primarily needed for enhancing the sound quality of the home theatre, the amplifier is a must-have home device if you want to experience the thrill of having a professional audio system in your home. With an amplifier, you can turn your house into a disco or a movie theatre, the choice is yours.

When purchasing an amplifier, you should keep a few things in mind. Keep reading to learn which features you should consider to make the best decision and don’t regret your purchase later.

  • Sum of Channels

An amplifier is connected with a number of speakers that depend on the number of channels. This should also match the set-up of the home theatre system. Buying speakers along with the amplifiers is always a good idea. This will help you choose the amplifier that will suit a certain space. For instance, a small room doesn’t require a full Dolby 9.1 set-up, a subwoofer with few midrange speakers should be enough.

  • Constant Power Rating

The volume of the speakers is directly proportional to the total power output of an amplifier. The power ratings is measured in watts-per-channel or WPC, and depends on the number of channels the amplifier can put out. A continuous power rating is needed for a high-end amplifier to function properly. Always look for WPC rating or total power in ‘RMS’ terms. This will refer to the constant power specification for a seamless home theatre experience.

  • Ratio of Signal-to-Noise

A good amplifier is one that ensures no background noise can get in the way. The ratio of signal-to-noise determines the clarity of the instruments and the main voices. This feature is crucial, specially for movies where listening to the dialogues of the characters is important. The ratio varies from 50 to 100 db. Check this feature carefully if you desire to turn your home into a theatre.

  • Distortion

Low distortion will ensure high-quality audio, since the high-power output alone can’t do the trick. The total Harmonic Distortion or THD should be below 0.5 percent. If it is above 1 percent, the sound will be distorted at high volume.

  • Dynamic Headroom

A dynamic headroom defines the power that an amplifier can put out in brief emissions. This is crucial for movies or music where the volume increases out of the blue. The dynamic headroom also defines the strength of the amplifier when the constant RMS power is inadequate. For instance, a 3 dB dynamic headroom means that the amplifier can double its output for a shorter span of time.

If you consider these features when purchasing an amplifier, you can’t go wrong with your purchase. Don’t neglect any feature and bring a theatre to your own space. What are you waiting for? Start shopping now!

4 Things to Look for When Buying an Amplifier

An amplifier is an electronic device used to boost the power, voltage or current of a signal from a musical instrument, a stereo system or any other audio-playing device. It picks up a weak signal and converts it into a strong one, thus making the sound louder without decreasing the quality.

Amplifier PyleAn amplifier should have certain specifications to really improve the sound. In the absence of those features, an amplifier fails to amplify the sound perfectly. Therefore, if you’re planning to buy an amplifier, look for these 4 things in the device before investing your money.

1) Power Rating

power rating of an amplifier refers to how loud your device can amplify sound. Many buyers believe in buying amplifiers with highest power capability but high power doesn’t mean good sound quality.

When buying an amplifier, look for the power rating according to space in which you want to amplify the sound. If you want an amplifier suitable for average listening in a small room, then 10 W power will be sufficient. However, if you want an amplifier for a music concert, then go for higher numbers.

2) Distortion Level

The distortion level is the amount by which the output of an amplifier is altered or distorted. It is denoted as THD, i.e., Total Harmonic Distortion and expressed in percentage. It is a crucial specification as high distortion level can make the sound unlistenable.

A lower distortion level is better as a lower percentage of THD means the output of the product will be closer to the original recording. Therefore, always choose this product with distortion level below 1%. A slight difference in the distortion level, say between 0.04% THD and 0.1% THD will not make a difference.

3) Signal to Noise Ratio (SNR)

A signal to noise ratio is a measurement that compares the level of amplifier’s signal power to the level of noise power. It is important because there is always a small amount of noise from the electrons buzzing inside an amplifier. If this background noise becomes prominent, then the music becomes inaudible. Therefore, consider buying an amplifier whose signal to noise ratio is higher so that you hear more of the music and less of the background noise. The larger the ratio, the better will be the separation between the sound signal (music) and the noise level.

4) Crosstalk

Crosstalk is a phenomenon by which a signal transmitted by one channel or circuit affects the other channel or circuit. In amplifiers, it refers to the undesired coupling between the channels of it. Measured in decibel (Db), crosstalk is when someone is talking on the right microphone but a little sound is coming out of the right speaker. Therefore, when buying this product look for the one with less crosstalk as higher crosstalk affects the stereo separation. For example, if A amplifier’s crosstalk is -100dB and B amplifier’s crosstalk is -60dB, then choose amplifier A because the larger the number following the minus sign, the greater is the stereo separation.

Look for these important specifications before purchasing this product. The power rating, crosstalk, SNR and distortion level are all essential aspects that affect the quality of sound increased by your amplifier. Keep these points in mind to get maximum benefit from your purchase.

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