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What is a DAC decoder?
I have a computer sound card. Why do I need to use DAC A- 1?

Simply put, you can listen to music without using a DAC. The purpose of using DAC is to improve sound quality. According to our actual test, the sound card is still difficult to surpass our DAC A- 1. Of course, we didn't test those sound cards that cost several times as much as ours.

I have a DVD. Can DAC A- 1 be used to improve the sound quality?

Yes, the current DVD uses large-size integrated blocks, mainly considering images, and the sound output effect is very general. After the digital signal of DVD is connected to DAC A- 1, the effect will be obviously improved.

I have a CD player. Can DAC A- 1 be used to improve the sound quality?

The relative effect of CD player will be much better, but as an introductory CD player, a lot of sound quality can only be barely heard, but it is equivalent to computer sound card output, DVD output, and CD digital output effect will be much better. After accessing DAC A- 1, it really works, so as long as your system has a certain quality, it is easy to feel it. The DAH package of pure flute, for such a CD within 3000 yuan, can clearly distinguish the promotion after accessing DAC.

What kind of sound quality will DAC A- 1 improve?

We produce DAC A- 1 for HIFI system, so we pay more attention to sound quality, which will improve the general entry HIFI system. In the actual sales process, many multimedia users with a price of more than 1000 yuan bought many earphone systems, and after using them, they felt "one ear improved", that is, they felt obviously different when connected, so we thought it was suitable for the following users: 65438+ 2. 1000 yuan multimedia system. Headphones within 3.3000 yuan.

I only have a laptop, can I improve the sound quality through DAC?

Yes, Pure Flute specializes in USB to SPDIF(USB to coaxial). You just need to plug this into your laptop through USB cable and then connect the other end to DAC. By using the analog output of DAC, you can connect any desired audio system.

There are many DACs on the market now. What are the technical features of your DAC A- 1?

The pure flute DAC A- 1 has three technical features:

1. Use two-stage phase-locked loop to improve the accuracy of digital signal. When you use a good turntable, you can reduce the jitter to less than 50PS. If you use computer digital output, you can also greatly reduce the jitter value. You can know what jitter is and how much jitter affects sound.

2. Adopt digital-to-analog fully balanced conversion mode. CS4398 is a high-end chip of CS Company, with four channels and full stereo balance. There are four quite old-school chips PM63, 1702 and 1704, because they are single-channel decoding. But our DAC A- 1 is completely balanced before converting RCA output, which is far better than unbalanced conversion.

3. The analog output consists of discrete components. Only tens of thousands of high-end products abroad use discrete components for analog output, but pure flute uses this technology in DAC A- 1. Generally, low-grade DAC can only use the output of integrated block operational amplifier.

What are the characteristics of DAC A- 1 sound of pure flute?

Some people say that the purpose of DAC is to improve the sound quality. If there is no obvious difference between the effect and the sound card, just change the name. Because of the above three technical characteristics, pure flute DAC has its own characteristics in sound.

1. First of all, it is the basic requirement of listening to music, but in fact it is difficult for entry-level products to do this. Pure flute outputs with discrete components, and that's it.

2. The high and low bass are well extended, and the low frequency is very loose. When connected to your system, you will obviously feel the change of low frequency.

3. The sound details are increased, the sound field is enlarged, and the levels are more distinct.

In fact, there is still a lot to say, so let's focus on these.

8. Why did I choose pure flute DAC? Give me some reason?

There are many DACs on the market now, or there are many DACs, so there are many choices, but the following points should be paid attention to when choosing:

1. Has your sound card improved significantly? Or "an ear difference"?

2. Does the sound last after connecting the DAC? Do you feel that your analytical power looks high, but you get bored after listening for a while? DAC is actually a product with high technical requirements. The chip only plays the role of decoding, and the real impact on sound quality involves many factors. Dr Zhao Zhou, a pure flute designer, has a deep research in this field. His top REME DAC is now priced at more than 20 thousand yuan, which is still in short supply and has sufficient technical reserves. Another important point is that the pure flute system is very balanced in all aspects. You may never be able to balance your systems together, resulting in some music that sounds good and some that you can't listen to at all. You can start with pure flute DAC and understand what balance is, so that you can easily start on the right path and make music more moving.

9. Why did I buy a new pure flute DAC machine, and it felt very different after cooking?

Yes, electronic products must be turned off. First of all, it takes some time to activate the electrolysis inside, and other components also need some time to run, so that the sound can be smooth. The pure flute DAC A- 1 uses discrete components to simulate the output, and it needs to be repaired. In fact, you can feel that the new machine is very different from the machine after 50 hours, and it will continue to change after 100 hours. Fortunately, the DAC machine is easy to repair and consumes little power.

X.DAC A- 1 how to fix it?

Cooking machines are actually very simple. Turn on the computer and you can cook the machine. Computer-USB-DAC. Open the FOOBAR player, select USB audio output in the output options, and then restart FOOBAR. Turn on the DAC power switch, and the power amplifier at the back need not be turned on. FOOBAR chooses loop playback, so that when your computer is turned on, the DAC will continue to boil. If possible, turn off DAC 10 minutes after boiling for 3-4 hours, and then continue. DAC power consumption is extremely low, so don't worry about the electricity bill.

1 1. Is pure flute DAC effective for headphones?

Because the earphone is close to the ear, the earphone of 2000 yuan can show many aspects, so the earphone needs a good sound source and can better reflect the quality of the sound source. The technical characteristics of pure flute DAC have been introduced before, so the earphone system can better reflect the effect of our DAC. You are very welcome to try it out, so that you will know more about our products.

I know you have seven days to return the goods unconditionally. Is that so?

Yes, for something as small as DAC, we suggest you try it. The price is not high, but it may let you know the real pure flute, which will be of great help to your future. After all, you really know what you heard. Many of our users started with DAC and learned about our real quality.

Thirteen. Pure flute DAC A- 1 Why is there no power amplifier?

Power amplifier is a very special product, because each earphone has different characteristics, so it needs a positive power amplifier. We make HIFI products, and we can't give users dissatisfied products, so we have a special matching amplifier.

14. What is the use of converting pure flute USB to SPDIF?

This is equivalent to a digital sound card, which receives data from the USB port of the computer, converts it into a digital signal that can be recognized by DAC through this device, and then makes DAC decode it. Especially suitable for notebook computers, because notebook computers generally have no digital output, otherwise there is no way to connect DAC. Now it is convenient to use DAC through this device. Computers can also be used. Of course, computers have many options, and sound cards with digital signal output can also be used. In addition, this can only output PCM data, and cannot be used on 5. 1

15. What is the quality of USB to SPDIF for pure flute?

Our USB to coaxial design is used for music, so it is more durable and easier to hear than the onboard digital output sound. Compared with digital sound card, it has its own characteristics. If it is an earphone system, we suggest that you use a good digital sound card.

16.DAC A- 1 Is it better to connect coaxial input or optical fiber?

Theoretically, they are almost the same, but because optical fiber needs two "electrical-optical, optical-electrical" conversions, the commonly used conversions on the market now are not very good. Just look at the cost, so there is a certain loss in the conversion process and a lot of loss in the details of connecting optical fibers, so we suggest using coaxial input. However, too long coaxial distance will also cause data loss, and it is generally appropriate to control it within 3 meters.

17. Now DAC A- 1 is an upgraded version. How can I confirm that I bought an upgraded version?

Pure flute has been discontinued for a long time, and now it is an upgraded version, so you can buy it with confidence. You can also see the components inside. The upgraded version uses 6 electrolyzers and boss uses 4 electrolyzers.

18. Why can my DAC A- 1 computer make sound after accessing DVD, but it can't?

Your DVD settings are incorrect. There are two modes for DVD digital output, one is AC3 mode for watching movies, and the other is PCM mode (which may be called stereoscopic or other names). Our DAC A- 1 is a HIFI decoder, which can only decode PCM mode, so you can look for the audio output in DVD settings to see if the digital output is PCM, and just set it as PCM.

19. Can pure flute DAC be directly used as power amplifier?

No, because we don't have earphone holes or special earphone cables.

However, because the DAC of pure flute is a discrete component output, it can also provide powerful output capability for headphones. Of course, there will be insufficient thrust, no volume adjustment, and improper use may burn the machine. Therefore, direct use is not recommended.