For enthusiasts, decoders, amps, preamps, post-amplifiers, etc. may be essential equipment on their desktops, because from a professional point of view, only with these devices can the high-end speakers of the enthusiasts And headphones to play a better quality. However, for the white-light users who are just getting started in the audio industry, they may not understand these seemingly very high-end audio devices, of course, they do not know what they are used for.
Nowadays, with the improvement of people's quality of life, the two or three hundred bookshelf speakers and headphones on the market have been difficult to meet the user's pursuit of sound quality, and everyone is more willing to spend more money to buy thousands of speakers and headphones. In order to get better sound quality; at the same time, more and more users are gradually paying attention to peripheral devices such as decoders, amps, amplifiers; for example, you have a friend who has an audio first burning, and may listen to him often. When it comes to decoding amps, what do they do?
First, let's explain what a decoder is. It is a digital-to-analog converter (DAC). It is a device that converts digital signals into analog signals by current or voltage. CD players, DVD players, portable players, TVs, mobile phones, etc., which are usually used, have decoders, because only through the digital/analog conversion function of the decoder, we can see video images and hear sounds from these devices. .
Some people may ask, "What is the difference between a digital signal and an analog signal?" In a nutshell, a digital signal is a code expressed by a number of 0, 1...., usually represented by a binary number. This signal cannot be directly seen and heard by people. Analog data refers to information expressed by continuously changing physical quantities, such as a wired telephone, an image taken by a camera, and a recorder. Recorded sounds, etc., can be directly recognized by people.
The role of the decoder is to convert these digital signals that we could not see and hear into human-readable analog signals; in audio devices, the decoder also plays a vital role in converting digital signals into In the process of analog signal, the quality of the decoder directly determines the quality of the output analog signal, and also determines the final sound effect; therefore, the better the decoder, the better the sound effect.
For example, the data read by the CD-ROM from the CD-ROM is a digital signal. With headphones and speakers, the sound cannot be played. They can only convert the analog signal into sound. The audio decoder converts this digital signal into Analog signals. CD players, portable players, mobile phones, etc. all include this part of the function; some enthusiasts who pursue HiFi effects are not satisfied with the sound of the built-in decoder, so the more high-end and expensive external independent audio decoder becomes Their choice.
Nowadays, the decoders on the market are mainly divided into pure audio decoders and decoding amps. Pure audio decoders are independent external types, which are more common in HiFi circles (such as YBA DAC1), which can be used for CD players or other digital sources. The player is divided into two, converts the read digital audio signal into an analog audio signal, and then outputs it to the amplifying device for playback. A good pure audio decoder is expensive, and it costs thousands or even tens of thousands of dollars. Yes, the pure decoder can't connect directly to the headphones. It must be connected to the headphones through an external amplification device to make a sound. Therefore, unless you are an enthusiast, you have to spend another money to purchase the amplification device.
This is probably someone asked, "What are the benefits of buying a decoder?", this question is good, whether it is a pure decoder or a decoding amp machine, what is the reason we buy it? Of course, it is to improve the sound quality. Ah; just like a sound card, an external independent sound card is definitely better than an integrated sound card. This is undoubted. The audio decoder is the same, whether it is a pure audio decoder or a decoding amp machine, as long as you buy it is not the kind. Very cheap knock-off goods, the money you spend will give you better sound quality, this input and output must be directly proportional.
When it comes to this, there will be a selective question, that is, how to choose pure decoder and decoding amp all-in-one? As we said above, the price of some pure decoders on the market is generally more expensive. The pure decoding of thousands of yuan can only be regarded as a mid-range device, but also with amplifying equipment; and an ordinary decoding amp machine is only a few hundred dollars, which can also make the sound quality of a thousand yuan headphones more Excellent, and easy to use and carry, especially suitable for friends who have a fever. So if you have ample budget, you can buy a simple decoding and amplifying device, and the return will be doubled. If your budget is less than a thousand dollars, then a decoding amp machine is your best choice, you can get better sound.
One thing I want to say is that I found that some friends around me generally have a misunderstanding. I think that the combination of an independent external decoder and amplifying device will definitely be better than the sound quality of the integrated decoding amp; however, this view ignores a comparison. Important premise - the level of the equipment (in the same price point). For example: a 4000 yuan amp decoding machine, the sound quality performance will definitely be better than the split-type equipment you set up at the same price, and may also It will be a lot better, so please pay attention to the friends of Xiaobai and the first burning.
to sum up:
Finally, from the point of use and operation, the pure decoder is more flexible and rich in matching with other devices, but the connection and operation will be somewhat complicated. The decoding amp is more concise and convenient in connection and operation. However, it is more difficult to upgrade with other equipment (such as amplifying equipment). In the end, it is likely that the original equipment in your hand is sold and replaced. Therefore, both have advantages and disadvantages, and friends still need Buy according to your actual needs and economic conditions.
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