Digital power amplifier is cheap and its power is quite high. That's because it uses switching power supply, the cost is much less than that of ring ox, and the power amplifier is smaller and lighter. These are its advantages, but the most important thing is that its sound quality is not good enough. The louder the sound, the more obvious the bass is. The sound is not strong enough and the loudness is not fast enough. It is more clear to have a comparison, preferably two amplifiers. One is a 500W digital power amplifier, and the other is a 500W ring power amplifier. Playing songs with strong rhythm and obvious bass will make you feel different. In the eyes of audio professionals, digital power amplifier is more suitable for listening to some light music songs. The overall sound quality can't compare with the ring bull amplifier.
Is the sound quality of digital power amplifier good?
It depends on the quality of this digital power amplifier. Making a good digital amplifier is not easier than making a good analog amplifier.
How to distinguish between digital power amplifier and analog power amplifier, their advantages and disadvantages?
Very simple digital power amplifier generally uses switching power supply and analog power amplifier uses transformer. If you can take it apart and look inside, analog power amplifiers all use high-power transistors to output large radiators, while digital power amplifiers are small and have different weights! Digital power amplifier is lighter than analog power amplifier.
The advantages of digital power amplifier are high efficiency, low heat dissipation requirement, simple peripheral circuit and low cost. Disadvantages: the sound distortion is great! The restoration degree of human voice is poor.
The advantages of analog power amplifier are better sound than digital power amplifier, but the disadvantages are high cost, high heat dissipation requirement, heavy weight, complex circuit structure and difficult maintenance.
I think you already know what his original amplifier was! ! This is not a coil, this is a transformer.
Ha ha! Then be popular! Digital power amplifier has low requirements for power supply and does not generate too much heat, so the radiator is also small. But the sound is not as good as the simulation.
Although the module is superior to digital audio, the low efficiency requires high power supply and the radiator is also big, but the audio advantage is obvious. Add the above, no matter what you like pop or not, this is clear at a glance.
Which sound quality is better, digital amplifier or analog amplifier?
The sound of digital power amplifier is accurate and clear, and the sound of analog power amplifier sounds more comfortable. If it's a home theater or something, it's okay to use a digital amplifier. If you want to enjoy music quietly, it is recommended to use analog power amplifier.
What is the sound quality of pure digital power amplifier? Have any friends used it?
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What digital amplifier has the best sound quality?
The sound quality of digital power amplifier is very close, because it is "digital". Primary selection ability
Which digital amplifier chip has the best sound quality?
The sound of digital power amplifier is accurate and clear, and the sound of analog power amplifier sounds more comfortable. If it's a home theater or something, it's okay to use a digital amplifier. If you want to enjoy music quietly, it is recommended to use analog power amplifier.
Which is better, digital power amplifier or HIFI power amplifier?
Digital power amplifier is also called class D power amplifier. The sound quality is not high at present. The best distortion rate is > 1%, while the general hifi power amplifier is less than 0.005%. Therefore, at present, digital power amplifier can't compare with HIFI. Look to the future.
The only thing better than FUIFI power amplifier is low power consumption, small size, small radiator and low requirements for peripheral components.
Advantages and disadvantages of digital power amplifier and analog power amplifier?
The basic circuit of digital power amplifier is the existing Class D amplifier (called Class D amplifier in China). Previously, due to the price and technical reasons, this amplifier circuit was only used in laboratories or high-priced test instruments. With the development of technology in recent years, the components of digital power amplifier are integrated into one or two chips, and the price is also falling. Theoretically, the efficiency of class D amplifier can reach 100%. However, so far, the ideal switching element has not been found, and there will inevitably be some power loss. If the devices used are poor, the loss will be even greater. But in any case, its amplification efficiency is above 90%.
Due to the advantages of power consumption and volume, digital power amplifier is first applied to car audio with limited energy and active subwoofer speakers with high requirements. With the rapid development of consumer products such as DVD home theater, mini-speaker system, set-top box, personal computer, LCD TV, flat panel display and mobile phone, especially the appearance of some new sound source specifications with high sampling frequency such as SACD and DVDAudio, and the evolution of sound system from stereo to multi-channel surround sound system, the development of digital power amplifier has been accelerated. In recent years, the price of digital power amplifier has been declining, and patents in this field have emerged one after another.
Proportion of class D output power and consumption power to class AB power amplifier consumption
An amplifier with fixed high frequency pulse width modulated by low frequency audio signal is called a class D amplifier, and some people also call it a digital audio amplifier. Its greatest feature is its high efficiency (up to 65,438+000% in theory and over 85% in practice), and a very high-power audio amplifier can be manufactured by using very small electronic devices.
For low-power amplifiers, namely 1W-3W, the power efficiencies of class AB and class D amplifiers are about AB= 15% and D=75% respectively under the same broadcast content. In the case of playing 1W music, the class AB amplifier needs to consume 6.7W, while the class D amplifier only consumes 1.33W under the same playing conditions. Therefore, using class D amplifier can prolong the service life of the battery by 5 times (6.7W/ 1.33W). Besides mobile phones, DVD, MP3 and PMP, there are also some popular products, such as iPod, mobile phones and digital photo frames. Then in the case of medium power, that is, the power amplifier of 10W-30W, the power efficiency of class AB amplifier and class D amplifier is AB= 25% and D=80% respectively. In the case of playing 10W voice, class AB power amplifier needs to consume 40W, while class D power amplifier only consumes12.5w under the same conditions. Therefore, the power supply cost (40W/ 12.5W) can be reduced by nearly three times by using the class D power amplifier, and the 2.5W heat generated by the class D power amplifier can be handled by the general power supply package and PCB design, and no additional radiator is needed. In the case of high power output, that is, 100W-200W digital amplifier will also occupy a place in car audio. Under this high power, class D power amplifier will inevitably use heat sink, but the heat dissipation area and quantity are smaller than those required by class AB power amplifier. Because of its high efficiency, Class D power amplifier can be used for a long time without starting the automobile engine and will not consume too much battery power. Class d power amplifier has become the current car audio.
Teacher Lao Duo of Electronic Production Network thinks that because the technology of Class D digital audio amplifier is very mature, it is planned to design some representative circuits of Class D digital audio amplifier and special audio power supply for amplifier for everyone to learn and make.
Advantages of power supply cost and heat dissipation cost of class D digital audio power amplifier
When calculating power, the manufacturer does not take the sound content as the standard, but uses the traditional sine wave signal as the input. For sine wave signals, the power efficiency of class AB amplifier and class D amplifier is about 45% and 80% respectively. If 15W×2 is used to calculate the total power supply of class D amplifier is about 30W/80%=37.5W, and that of class AB amplifier is about 30W/45%= 66.7W, then using class D amplifier can save nearly 30W. Because the power supply of the power amplifier is provided by the power supply device, the cost of the power supply device of the class D power amplifier will be greatly reduced. At the same time, the radiator and the power supply of the power supply device ......
Which sound effect is better, digital amplifier or analog amplifier?
Hello! The fidelity of digital power amplifier is relatively high, that is to say, the sound quality of sound source is good and the restored sound quality is good. The output sound of analog power amplifier is modified according to the needs of listeners, which is somewhat different from the original sound source. So it should be that the digital power amplifier has a better telepresence and the sound quality is closer to the original sound.