home theater amplifier and HIFI stereo amplifier, which one is better?

                                         What is an AV amplifier

The A (audio) of the AV amplifier represents audio and sound, and the V (video) represents audio and image. Therefore, the AV amplifier is an audio-visual amplifier that combines audio and video signal processing. It emphasizes the atmosphere of the sound field and is specially used for home theaters. .

What is a HIFI amplifier

Hi-Fi of HIFI power amplifier is the abbreviation of English Hight-Fidelity, which is literally translated as high fidelity. It requires audio equipment to amplify and process various indicators of the sound signal without distortion during the playback process to restore the original appearance of the sound source. , which emphasizes the original taste and is specially used for enjoying music, such as classical music.

The difference between AV amplifier and HIFI amplifier

In the above, we briefly understood "what is an AV power amplifier and what is a HIFI power amplifier", and realized the difference in usage between AV power amplifiers and HIFI power amplifiers: the former is mainly used in the home theater field and requires audio + video equipment. The latter only needs to provide audio equipment and focus on enjoying music. So apart from that, what are the differences between AV amplifiers and HIFI amplifiers? Let’s continue to look down.

1. Different number of channels

AV amplifiers have 4-9 channels, which drive multiple speakers to form a surround sound field. For example, Dolby AC-3 requires 5.1 channels. Hi-Fi amplifiers generally use two channels when playing sound, that is, amplifying the signals of the left and right channels, and pushing the left and right sets of speakers, thus forming a stereo sound field.

2. Different parameters and indicators

The main parameter indicators of AV power amplifier include output power, harmonic distortion, signal-to-noise ratio, frequency range, rated impedance and damping coefficient, etc., with special emphasis on channel isolation, delay time range, various sound field modes and other indicator parameters, and also More indicators related to the video section. Although Hi-Fi power amplifiers also have these parameter indicators, they emphasize harmonic distortion and signal-to-noise ratio.

3. Different sound atmospheres

The main design purpose of AV amplifiers is to create a sound field, emphasizing the directionality of the sound and simulating the atmosphere of the listening environment, while the Hi-Fi amplifiers are mostly designed for high fidelity and pay attention to the original sound. Amplifying the signal emitted by the signal source is mainly used to enjoy music, vocals, etc., and pursue the true effect of the sound.

Can an AV power amplifier be used as a HIFI power amplifier? The AV power amplifier brings together two signal processing amplifiers, audio and video, while the HIFI power amplifier only has an audio amplifier.

So can we use AV amplifiers instead of HIFI amplifiers? The answer is no, for the following three reasons:

1. The AV amplifier has insufficient power when playing music with a large dynamic range.

The output power of the AV amplifier in two-channel mode is greater than that in four-channel mode. At this time, if you choose music with a large dynamic range for audition, you will obviously feel inadequate. The Hi-Fi amplifier seems calm and leisurely.

2. The routing of AV amplifiers often affects the sound quality.

AV amplifiers are equipped with a variety of video and audio ports and are connected to multiple sets of audio and video signal sources, resulting in many and complicated signal wirings, which can easily cause mutual interference of signals. The original rich high-frequency components of high-quality signal sources are attenuated or interfered, so that the listener cannot appreciate the high-fidelity effect.

3. The fluorescent screen of the AV amplifier will interfere with the sound quality

There is a large fluorescent display on the AV amplifier panel. When driven by pulse signals to display characters, it will radiate a lot of electromagnetic interference to the surroundings, significantly affecting the sound quality.