Home theater audio equipment front and rear power amplifier selection

With the improvement of living standards, many families have a larger entertainment space, and began to build home theaters and other entertainment equipment. Home theater audio equipment includes TVs, projectors, speakers, amplifiers, etc. Today, Beilarly audio manufacturers come to talk about the choice of home theater amplifiers.

The amplifier is used to receive and process audio and video signals to obtain better audio and video effects and output to video equipment, such as TVs and projectors, and output to audio equipment, such as speakers. There are many types of amplifier products on the market with different functions.

The power amplifier can be divided into two parts: pre-level and post-level.

The pre-amplifier is the pre-amplifier, which is the most influential part of the complete set of equipment, and the post-amplifier is the real power amplifier part, that is, the pure post-amplifier, which has a greater impact on the dynamic and low-frequency control power The audio signal of the power amplifier is amplified, and the input signal of the latter stage is very simple, that is, to accept the output of the previous stage. The power amplifiers used in general home theaters are mostly combined power amplifiers, that is, front and rear stage combined amplifiers. Combined power amplifier refers to the combination of front and rear power amplifiers, not only for audio signal reception and processing, but also for high power output amplification.

How to choose, mainly depends on the collocation of speakers or listening environment to make a decision. Generally speaking, it is better to separate the front and rear power amplifiers. If the sound system has high requirements, it is recommended to choose the power amplifier with volume control in the rear stage. First, separate pre-amplifiers and post-amplifiers can have their own space to make more precise, and the materials will be more sufficient. Second, due to the corresponding processing, the signal interference between each other is less, and the details are more adequate. It is true that the merged power amplifier is at a disadvantage in this respect. Even the top-level merged power amplifier is not as good as the top-level independent front and rear power amplifiers. But compared to using the front and rear power amplifiers alone, the combined power amplifier is more cost-effective and is sufficient for general home theater audio equipment. Especially if the performance of the speakers is average, and the sound environment set at home is not perfect, it is recommended that you use a combined power amplifier with tone adjustment. Because of the power amplifier with tone adjustment, it can freely increase or compensate the tone levels of different frequency bands, that is, in the listening audio section, the defects of the speaker itself or the environment are beautified and modified through the artificial adjustment of the power amplifier's tone circuit.

So which kind of power amplifier should be chosen depends on your listening preferences, speakers and other equipment, and the actual situation of the environment, not a generalization.