Guidelines For Spotting The Best Audio Amplifier

https://www.amazon.com/microFidelity-Audio-Amplifier-Model-Black/dp/B004HW3KKE

mini amplifierChoosing a decent audio amplifier for your loudspeakers is not a trivial task. You want to guarantee that your amp matches your speakers. I will describe some simple amplifier vocabulary and give some recommendations to help you pick the right amplifier.

It is difficult to select the right audio amp because of the large quantity of types. All of these models have different specs. They are based on different technologies and are available in all kinds of shapes and sizes. This makes it tricky to decide which type to pick. You don’t have to be an expert. Just follow some simple guidelines and you should be pleased with your amp.

The most evident criterion is the size of the amplifier. There are types that are as big as half your living room while a number of of the latest mini amplifier models are as tiny as a bar of soap. A large number of amplifiers are the size of a standard rack. This enables your amp to be stacked on top of your other audio equipment.

There are a number of core amplifier technologies available. One technology is known as "solid-state". Solid-state amplifiers now make up for the bulk of audio amplifiers. In the past, tube amps have been popular. Even today tube amplifiers are still available. Unfortunately, tube amps have relatively high audio distortion which describes how much the audio signal is degraded by the amplifier. An audio distortion of up to 10% is characteristic for tube amplifiers while solid-state amps have lower audio distortion depending on the particular technology. In the past, mostly "Class-A" and "Class-AB" amplifiers were obtainable which are also called "analog amplifiers". This technology provides rather small audio distortion. However, the power efficiency is merely 10 to 30%. Power efficiency describes how much of the electrical power is used to amplify the audio as opposed to being wasted as heat. Amps with low power efficiency will need quite large heat sinks since most of the power is radiated.

Another technology is known as "Class-D". This technology offers much greater power efficiency than analog amplifiers, typically around 80 to 90%. "Class-D" amplifiers are also named "digital amplifiers". The downside is that many digital amplifiers have higher audio distortion than analog amplifiers though a few of the most recent models make use of a feedback mechanism to minimize distortion to levels of 0.05% and below.

When selecting an amp, make certain that the output power is enough to drive your loudspeakers. The needed power will be determined by how much power your speakers can handle as well as the size of your room where you will be listening. Speaker power handling capability is specified as peak power and average power. The peak power value refers to how much power the speaker can handle for a short period of time whilst the average power handling value denotes how much power you can drive the speaker at continuously without damage. In a small listening environment, you might not require to drive your loudspeakers to their rated value. 20 to 40 Watts of power will most likely be enough. Low-impedance loudspeakers normally offer high sensitivity and are less difficult to drive to high volume than high-impedance loudspeakers. Not all amps can drive every speaker impedance. Find out the impedance of your speaker which is given in Ohms. Then take a look at your amplifier manual to guarantee that your amplifier can drive this impedance.

Two other important parameters to look at when picking an amp are signal-to-noise ratio and frequency response. Signal-to-noise ratio denotes how much noise the amp will generate and should be no less than 100 dB for a high-quality amplifier. The frequency response shows which audio frequency range the amp covers and should be no less than 20 Hz to 20 kHz.

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