[Home Theater Network HDAV.com.cn] AV amplifier and HIFI amplifier are the two most common devices in the speaker equipment market. For many small white users, he may not know "what AV amplifier, what is HIFI amplifier" Then, how can he buy the required amplifier? Don't worry, today, the author will tell you: the difference between AV amplifier and HIFI amplifier, and which amplifier is good.
What is an AV amplifier?
AV amplifier's A (audio) means audio, audio, V (video) means audio, image, so AV amplifier is a combination of audio and video signal processing audio amplifier, emphasizing the sound field atmosphere, dedicated to home theater .
What is a HIFI amplifier?
Hi-Fi of HIFI amplifier is the abbreviation of English Hight-Fidelity, which is literally translated as high fidelity. It requires the audio equipment to amplify and process the sound signal indicators without distortion in the process of playback to restore the original appearance of the sound source. It emphasizes the original taste and is specially used to enjoy music, such as classical music.
The difference between AV amplifier and HIFI amplifier
In the above, we simply understand the "what is the AV amplifier, what is the HIFI amplifier", and recognize the difference between the use of AV amplifier and HIFI power: the former is mainly used in the home theater field, requires audio + video equipment, The latter only needs to provide audio equipment, focus on listening to music, then in addition, what is the difference between AV amplifier and HIFI amplifier? We continue to look down.
1, the number of channels is different
The AV amplifier has 4-9 channels that drive multiple speakers to form a surround sound field. For example, the Dolby AC-3 requires 5.1 channels. The Hi-Fi function is usually two channels when playing, that is, the signals of the left and right channels are amplified, and the left and right two groups of speakers are pushed, thereby forming a stereo sound field.
2, the parameter indicators are different
The parameters of the AV power amplifier mainly include output power, harmonic distortion, signal-to-noise ratio, frequency range, rated impedance and damping coefficient, especially highlighting the channel isolation, delay time range, various sound field modes and other indicators. More indicators on the video section. Hi-Fi amplifiers have these parameters, but they emphasize harmonic distortion and signal-to-noise ratio.
3, the sound atmosphere is different
The AV power is placed in the sound mode as the main design purpose, emphasizing the sense of position of the sound, simulating the atmosphere of the listening environment, and the Hi-Fi function is designed with high fidelity in the way of sound reproduction, paying attention to the original taste. Amplify the signal from the signal source, mainly used to enjoy music, vocals, etc., and pursue the true effect of the sound.
AV amplifier can be used as HIFI amplifier? AV amplifiers combine audio + video two signal processing amplifiers, while HIFI amplifiers only have audio amplifiers.
So, can we replace the HIFI amplifier with an AV amplifier? The answer is no, the reasons are as follows:
1. AV power is insufficient when playing large dynamic range music.
The AV amplifier has a larger output power in the two-channel state than in the four-channel state. At this time, the music with a large dynamic range is used for audition, and it is obvious that the power is not enough. The Hi-Fi amplifier is calm.
2, AV amplifier wiring affects sound quality
The AV amplifier sets a variety of video and audio ports, and accesses multiple sets of audio and video signal sources, resulting in many and complicated signal lines, which easily cause mutual interference of signals. The original high-frequency components of the high-quality signal source are attenuated or interfered, so that the listener can not appreciate the high-fidelity effect.
3. The screen of the AV amplifier will interfere with the sound quality.
The AV power amplifier panel is equipped with a large-scale fluorescent display. The character display is driven by the pulse signal, which will radiate a lot of electromagnetic interference to the surrounding, which obviously affects the sound quality.
It is said that the AV amplifier can not replace the HIFI amplifier, but it does not have to be so true. If your requirements for sound quality are not too high, the AV amplifier can also be used as a HIFI amplifier. Of course, the final result is not so ideal compared to professional HIFI amplifiers. More fresh and fun home theater information, please pay attention to home theater network http:// (WeChat: cnhifi), the country's most influential home theater audio player interactive media website.
Note: This article is transferred from Audio China. The article is an independent view of the author and does not represent the position of the home theater network.
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