A Look At Very Small Home Amps

Picking the right audio amplifier can be daunting given the huge number of different models and technologies. I will assist you understand some of the essential amplifier jargon terms. This know-how will aid you choose the best amplifier.

An audio amplifier will connect your audio source with your speakers by converting the rather weak source signal into a powerful sufficient signal to drive your loudspeakers. Depending on your application, you may desire to go with a source that already has a built-in amplifier. On the other hand, utilizing a separate amplifier will give you more versatility in picking the type that best complements your speakers. Some of today's mini amplifier models can be concealed virtually everywhere due to their small size. Many people will look at amplifier wattage first when selecting an amplifier. Output wattage is the amount of energy the amplifier is capable to deliver to the speakers. Driving low-sensitivity speakers (sensitivity is shown in dB/W) calls for fairly high wattage. Furthermore, driving outdoor speakers or speakers in a large room will require higher amplifier power. Don't overdrive your speakers though because this may irreparably harm your speakers. However don’t be overly worried about wattage. An amp providing 20 to 50 Watts will give you more than plenty of power to adequately drive a speaker in any but the largest room.

Amplifier output power is given in Watts rms (continuous) and Watts peak. The rms or continuous value tells you how much power the amplifier can deliver constantly while the peak power figure tells the highest wattage that the amplifier can deliver for short intervals of time. Normally you ought to choose an amplifier based on rms power. However, make sure that website the amplifier has enough headroom or peak power to avoid clipping of music signals. There are additional parameters that are more important than wattage when selecting an amplifier. One important parameter is called total harmonic distortion or THD in short. Every amplifier will introduce some imperfections into the audio signal which is known as distortion and expressed in percent or dB. A smaller distortion number means a lower distortion of the audio signal by the amplifier. Audiophile amplifiers will have distortion numbers of typically less than 0.05%. Consumer-grade amplifiers will have distortion figures of up to 10%. Signal-to-noise ratio is another amplifier characteristic. This number describes the amount of noise which the amplified will add to the audio. The figure is expressed in dB. Consumer-grade amps will have a signal-to-noise ratio (SNR) of at least 80 dB. Higher-end amps will have an SNR of 100 dB or more. Audiophile amps will have an SNR of close to 120 dB.

Most of today's amplifiers are so-called Class-D amplifiers which means that they have higher power efficiency than Class-A or Class-AB amplifiers and for that reason waste little energy as heat. Some of today’s mini amplifiers are no bigger than a deck of cards. A lot of Class-D amplifiers, though, have higher distortion and a lower signal-to-noise ratio than Class-A or Class-AB amplifiers. Be certain to look closely at these numbers when picking a Class-D type amplifier.

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