LouiseWinner
Member
Many people want to dream of having their own home theater and enjoying the audio-visual feast freely at any time. But many people don't know much about the home theater equipment. In addition to the necessary program source equipment, video display equipment and audio equipment, we also need amplifier equipment, that is, power amplifier. How to choose the power amplifier of the home theater? The power amplifier of the home theater is the equipment that provides the ability and multi-channel information for the multi-channel speaker system, so for a power amplifier, there are two more important points.
1. How rich and complete is the sound information the power amplifier provides to the speakers. This is the difference between the decoding accuracy and the decoding ability of the power amplifier.
The accuracy is related to the amount of sound information. Simply speaking, the higher the decoding accuracy of the newer power amplifier, the greater the amount of information. Even if the same brand and the same level of power amplifier, the new model will have higher precision than the old model. If the same source is played, the sound will have more information. At the same time, the decoding ability is also related to the maximum number of channels supported by your amplifier, which is particularly important in today's popularity of Dolby panoramic sound and DTS X.
2. Whether the power amplifier can provide enough current to make the sound clear and powerful enough. That is, the driving force of power amplifier.
Many people like to see the official parameters to compare the drive of AV power amplifier, but it doesn't make much sense. Under different test methods (how much impedance, which range of frequency response to choose, intermodulation distortion standard), different power amplifier labels will be obtained. For example, in order to make the power parameters of the amplifier look higher, the manufacturer provides you with the output parameters of the mono amplifier. However, it doesn't make any sense. Because what we need is the power output index of all channels.
The simplest way to identify which AV power amplifier has a larger drive is to see the media guide price, which one is more expensive, and the expensive one must be better.
This method is suitable for the selection of home theater power amplifier products from Denon, Marantz, Yamaha, Onkyo and Pioneer. The reason is also very simple, because they are long-term competitive relationships, products of the same price, the drive must be the same, you can also understand that this is the potential rule before the manufacturer.
If you buy American and European power amplifier, such as Harman or NAD home theater amplifiers, the price of drive is not applicable. Because of the same price as Japan's European and American aircraft, the decoding ability is often not as good as Japan's aircraft, but the power amplifier's drive is much greater!
The reason is simple. Japanese department is better at electronic part, which requires a lot of R & D investment. And European and American power amplifier manufacturers are better at making amplifier circuits, because they are better at making parts of the sound itself.
HDMI version support
Because the AV power amplifier will become the home theater audio and video switching center, all players will be connected to the power amplifier through HDMI, and then the HDMI output of the power amplifier will be connected to the projector or TV. Therefore, the HDMI version of AV power amplifier is very important. The new amplifiers will carefully mark the specifications of HDMI. If your AV Amplifier HDMI doesn't support hdcp2.2, even if you use a UHD 4K player, the projector is also a 4K projector, and you can't see the full effect of UHD movies.
Wireless music support
This includes Bluetooth play, airport play, DLNA play and other functions that can quickly put music in the mobile phone or home NAS server, and quickly use the mobile phone to play on demand on the power amplifier. In the past two or three years, all the power amplifiers have been supported. It's a very important function for people who buy a stereo not as a toy, but as a daily user of household appliances.
As the home theater power amplifier has become the home audio-visual data exchange center, so its functions are more and more. When your home theater speakers are hard to drive (large floor speakers, low sensitivity speakers), then driving is more important than decoding. When your speakers drive well (a home theater system composed of small satellites and Bookshelf Speakers), decoding is more important than driving. With the same brand and products of the same era, the more channels you decode, the better the drive! As for which one you choose, it mainly depends on your room condition and wallet.
1. How rich and complete is the sound information the power amplifier provides to the speakers. This is the difference between the decoding accuracy and the decoding ability of the power amplifier.
The accuracy is related to the amount of sound information. Simply speaking, the higher the decoding accuracy of the newer power amplifier, the greater the amount of information. Even if the same brand and the same level of power amplifier, the new model will have higher precision than the old model. If the same source is played, the sound will have more information. At the same time, the decoding ability is also related to the maximum number of channels supported by your amplifier, which is particularly important in today's popularity of Dolby panoramic sound and DTS X.
2. Whether the power amplifier can provide enough current to make the sound clear and powerful enough. That is, the driving force of power amplifier.
Many people like to see the official parameters to compare the drive of AV power amplifier, but it doesn't make much sense. Under different test methods (how much impedance, which range of frequency response to choose, intermodulation distortion standard), different power amplifier labels will be obtained. For example, in order to make the power parameters of the amplifier look higher, the manufacturer provides you with the output parameters of the mono amplifier. However, it doesn't make any sense. Because what we need is the power output index of all channels.
The simplest way to identify which AV power amplifier has a larger drive is to see the media guide price, which one is more expensive, and the expensive one must be better.
This method is suitable for the selection of home theater power amplifier products from Denon, Marantz, Yamaha, Onkyo and Pioneer. The reason is also very simple, because they are long-term competitive relationships, products of the same price, the drive must be the same, you can also understand that this is the potential rule before the manufacturer.
If you buy American and European power amplifier, such as Harman or NAD home theater amplifiers, the price of drive is not applicable. Because of the same price as Japan's European and American aircraft, the decoding ability is often not as good as Japan's aircraft, but the power amplifier's drive is much greater!
The reason is simple. Japanese department is better at electronic part, which requires a lot of R & D investment. And European and American power amplifier manufacturers are better at making amplifier circuits, because they are better at making parts of the sound itself.
HDMI version support
Because the AV power amplifier will become the home theater audio and video switching center, all players will be connected to the power amplifier through HDMI, and then the HDMI output of the power amplifier will be connected to the projector or TV. Therefore, the HDMI version of AV power amplifier is very important. The new amplifiers will carefully mark the specifications of HDMI. If your AV Amplifier HDMI doesn't support hdcp2.2, even if you use a UHD 4K player, the projector is also a 4K projector, and you can't see the full effect of UHD movies.
Wireless music support
This includes Bluetooth play, airport play, DLNA play and other functions that can quickly put music in the mobile phone or home NAS server, and quickly use the mobile phone to play on demand on the power amplifier. In the past two or three years, all the power amplifiers have been supported. It's a very important function for people who buy a stereo not as a toy, but as a daily user of household appliances.
As the home theater power amplifier has become the home audio-visual data exchange center, so its functions are more and more. When your home theater speakers are hard to drive (large floor speakers, low sensitivity speakers), then driving is more important than decoding. When your speakers drive well (a home theater system composed of small satellites and Bookshelf Speakers), decoding is more important than driving. With the same brand and products of the same era, the more channels you decode, the better the drive! As for which one you choose, it mainly depends on your room condition and wallet.
