Shopping Tips For Audio Amplifier Models

If you have spent a good deal of cash on a pair of good-quality loudspeakers, you want to be confident that you get an amplifier such as a T-Amp which will offer excellent audio quality while meeting your budget. I will provide some pointers on the subject of audio amp devices to help you make the right purchasing decision.

It is tricky to select the perfect audio amp because of the large number of models. All of these types have different specs. They are built on different technologies and are available in all kinds of shapes and sizes. By following some simple rules, you will be able to pick the type that best meets your application and resources.

One important parameter is the size of the amp. You can purchase models which can fill half a room. In contrast, a number of of the latest miniature amp models are no bigger than a deck of cards. A large number of amplifiers are the size of a typical rack. This enables your amp to be stacked on top of your other audio devices.

Most of recent audio amps are based on solid-state technology while a tiny portion is based on tube technology which has been popular over a decade ago. Tube amplifiers, on the other hand, have a fairly high level of harmonic distortion. Harmonic distortion refers to how much the audio signal is degraded whilst being amplified. This expression is frequently used while evaluating the audio quality of amplifiers.

An audio distortion of up to 10% is usual for tube amps while solid-state amps have lower audio distortion depending on the specific technology. Several of the most accepted technologies in the past have been "Class-A" and "Class-AB" technologies. These technologies use different arrangements to amplify the sound. Amps based on any of these technologies are also named "analog amplifiers". This technology provides rather small audio distortion. However, the power efficiency is merely 10 to 30%. Power efficiency refers to how much of the electrical power is in fact used to amplify the signal. The remaining portion is wasted as heat. An amp with low power efficiency will radiate the majority of its power as heat.

In comparison, "Class-D" amplifiers which are also known as "digital amplifiers" have a power efficiency of generally 80 to 90%. This enables the amplifier and power supply to be made much smaller than analog amplifiers. Due to the switching output stage, digital amplifiers usually have larger harmonic distortion than analog amplifiers. On the other hand, some of the newest models are capable to minimize distortion to 0.05% and less by using a feedback mechanism.

When picking an amplifier, make certain that the output power is adequate to drive your loudspeakers. The needed power will be determined by how much power your loudspeakers can tolerate as well as the size of your space where you will be listening. There are two values for speaker power handling: peak and average power handling. The peak value shows how much power the speaker can handle for short periods of time. The average value on the other hand denotes how much power the loudspeaker can tolerate continuously without harm.

In a small listening setting, you may not need to drive your speakers to their rated value. 20 to 40 Watts of power will almost certainly be plenty. Notice though that loudspeakers differ in their sensitivity. Typically a low-impedance speaker will be easier to drive to high volume than a high-impedance speaker. Not all amplifiers can drive any 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 essential parameters to look at when choosing 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 at least 100 dB for a high-quality amplifier. The frequency response shows which audio frequency range the amplifier covers and should be at least 20 Hz to 20 kHz.