It’s sorted out at the end of the product introduction【Customer purchase evaluation】, The content includes the feeling of the product effect, the experience of use and the photos, and I hope to provide you with reference. All reviews are written by customers and are true descriptions.

In the video, they are: number letters with player+  PCM1794 large decoder + DM100 large dynamic transistor front stage + DM100  800W*2 pure rear stage

Many customers report that we now have decoders, pre-amplifiers, post-amplifiers, speakers, and home theaters, but we lack a HIFI audio source. Customers also bought a lot of digital players, but they were disappointed. It was a mixed bag. That''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s mainly because these products are designed by digital circuit personnel, who can digitally program, but are weak in HIFI analog design. Although some products seem to be technologically advanced, have high indicators, and are as neat as a computer board, they just can''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t produce good sound, and the sound effect is not much better than that of a computer. The sound is generally heavy with digital taste, hard and dull, and the sound is too hard to listen to.

The god of music, started making mineral radios 30 years ago, electronic tube products 30 years ago, MCU CPU products 20 years ago, and HIFI audio products 20 years ago. Won a number of domestic competitions. Yes“Analog circuit” and“Digital circuit” and“ MCU CPU” and“Electronic tube” I have a deep understanding of music and art, so I hereby develop a digital player, I hope fans will like it.

1. Music Sword God 24BIT digital player, standard version, 4998 yuan:The domestic copper cow has a magnificent sound and the best sound effect among the products of the same grade.

2. Music Sword God 24BIT digital player, bold version, 5498 yuan:British aunt TALEMA cattle, American red beauty, and other fever tube materials and tuning, the midrange is warm and charming, and the sound is 30% better.

1,“Music Sword God” The tuning is famous. The sound is sweet, without the annoying digital taste of ordinary digital broadcasting.

2. Support WAV 24BIT/192KHZ decompression, restore music with high precision. The effect is completely comparable to the mid-range CD effect of 50-10 million.

3. Use a dedicated DPS chip to realize music in multiple formats. Support WAV, FLAC, APE, etc.【Support DSD file playback, followed by device decoder requires DSD decoding function】

4. Using advanced FPGA 32-bit single-chip CPU architecture.

5. Support SD/SDHC/SDXC, audio source made by card, up to 128G.

6. Output interface: coaxial digital, optical digital, AES/EBU, I2S digital ports, all with isolated output.

7. Simple operation: support remote control. An SD card.

8. Using ferroelectric memory, it can be rewritten indefinitely to complete the firmware upgrade.

9. Large color screen display. All aluminum alloy shell, beautiful and generous style.

Random gift package: Great Wall power cord, high-quality coaxial signal line, SD8G memory card full of music, beautiful remote control, 2 remote control batteries.

Random gift package: Great Wall power cord, high-quality coaxial signal line, SD8G memory card full of music, beautiful remote control, 2 remote control batteries.

At present, many customers ask us which sound source is better? Is the CD 16BIT too old? Is the digital player too expensive? How about the domestic digital player? And so on.

1. At present, according to the effect row, the order is: 24BIT digital alphabet player, 24BIT APE player, 16BIT CD player, 16BIT APE player. However, because many 24BIT APE players are not done well, most of the effects are not as good as 16BIT CD players.

2. Currently“Music Sword God”I have heard of them, and the effect is good. The 24BIT digital player is a relatively high-value imported brand, all of which are at least 30,000 or more. A new 13,000 digital player for British Music Fax. It’s okay. The analog taste is heavier. It has a typical British taste, but the sense of hearing is not very suitable for Chinese people. The sound adhesion is relatively strong. It is scored according to the price of 13,000 yuan. If it is, it can barely give 60 points. I have almost never heard of a domestically produced product that can achieve a pass. Some are quite expensive, for 3,000, 5,000, 8,000 yuan or something. The effect is very poor, don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t waste money. They are all designed by people who can only design digital circuits. They have sound, functions, and large display screens. But the music effect basically has nothing to do with HIFI fever, not much better than the computer sound. They all have a strong digital taste, and they are still far away from HIFI music art.

3. If you have an old 16BIT CD player, you can use a 24BIT DAC decoder to improve the performance.

4. I have heard of a domestic product that works well, that is, 16BIT, QLS350+, 1350 yuan, this portable model. There are a lot of customers I have listened to. I have not heard of one yet. I think it can pass, except for the QLS350+. The disadvantage is that this model is small and portable. Another disadvantage is that it only has 16BIT. However, it seems that the 24BIT product is not very effective. After research, it is estimated that the 350+ model is battery-powered, which avoids insufficient tuning of the power supply and the impact on the sound. According to the price of 1,300 yuan, 70 points. Later, his family produced several expensive ones, but I think they are not as good as the small ones.

5. The 2000 or so digital player of degree G is actually okay. Several fans have brought it to our factory and listened to it. It’s better than many others.The player is better. If you give a score, you can get 50 points. However, he still lost compared with the 1498 yuan CD player made by the music sword god with a computer optical drive. Can''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t compare to our CD player. It is said that there are more BUGs.

6. Enjoy S.’s digital player is relatively hot recently. I’ve heard one from his home, with more than 2500. The effect is very general, and it’s definitely not as good as our player. Recently, his family has released more than 5,000 models. I have not heard of them. According to fans, there is no digital taste. The analog taste is relatively strong. Some people even nodded if it was too thick. Specifically, we wait for the enthusiasts to take our 2 digital players PK. See who is high and who is low. Sword God, is to constantly PK, continuous improvement and improvement, in order to eventually become a generation of kings, right, hehe.

7. The digital player of King F, seems to have been made last year. The price is quite expensive, more than 5,000 without DAC, more than 8,000 with DAC. I heard that the sound digital taste is very heavy, it can be loud, and it has nothing to do with fever HIFI. It is estimated that they are designed by people who can only design PCB. Fans have also heard it, and they all said they shook their heads. Don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t waste money. The advantage is that with the Android operating system, the control function will be stronger. In fact, it is a small computer, so the effect is not much better than that of a direct computer.

8. I have heard of many other digital players, and hobbyists like to take the machine to me for PK. Most of them are not as good as the ones mentioned above. Not only the sound is not good, but some also crash or have a lot of bugs. Very mixed, domestically produced and stable, almost none.

9, so,“Music Sword God” Specially tuned two 24BIT lossless digital players. With our small PCM1794 decoder, it can achieve the best results. At present, it is probably comparable to the effect of 10,000-20,000 mid-to-high-end CD players. The tuning and materials are all designed in accordance with the idea of ??making a fever tube amplifier. The purpose is to minimize the digital taste of the digital player and make the sound sweet and true.

The product has already started production, and some fans are curious, so I took some photos in production for the fans to see.

The following is a picture of the button position near the panel: German-made golden Frank FRAKO, axial capacitor, huge volume, very beautiful, it is likened to a gall god stone fairy. Make the sound full of magnetism.

Black domestic cattle made to order

The yellow ones are imported British aunt TALEMA cattle, and other materials are also better.

Here is another overall picture:

The tuning is complete. The finished product! ! !

The following is the boot screen: Our FPGA-based 32-bit single-chip CPU is very fast, and it only takes 1 second to boot with an 8G card. Absolutely fast.

Configuration process:（All DAC devices are the same）

Computer USB interface---DAC---Amplifier---Speaker

Plug in the computer---with a coaxial digital sound card---DAC---amplifier---speaker.（With a coaxial digital sound card, only 35 yuan for 2 hands, the sound is much better than the USB connection, it is the best configuration for the computer to produce good sound, it is recommended to use）

CD coaxial/optical fiber---DAC---power amplifier---speaker

DVD coaxial/optical fiber---DAC---power amplifier---speaker

HD player/optical fiber---DAC---amplifier---speaker

Comparison of common interface effects:（All DAC devices are the same）

Coaxial---100% effect. Digital direct transmission, of course, the effect ranks first. Since the coaxial anti-interference ability is poor, the transmission distance should not exceed 10 meters, and a good shielded coaxial cable can improve the sound.

Advantages: The impedance is constant, the transmission frequency band is relatively wide, and the high-quality coaxial cable has a bandwidth of several hundred MHz. Time base jitter error（Jitter）Small,The time base error of coaxial transmission is the smallest among these three kinds of interfaces.
Disadvantages: Because its peak voltage is only 0.5V, the transmission distance is short. Even if the connection line uses a high-quality 75 ohm coaxial cable, the transmission distance will not exceed 10 meters.

Optical fiber---90% effect. Because of the photoelectric conversion, there is an additional level of digital distortion, and the sense of hearing is that the high pitch is a bit hairy relative to the coaxial, but the difference is not big. The advantage is that it can be transmitted over long distances.

Advantages: The optical fiber connection can achieve electrical isolation, prevent digital noise from being transmitted through the ground wire, and help improve the signal-to-noise ratio of the DAC. Therefore, the sound quality of this type of optical fiber interface is relatively transparent.
Disadvantages: Since the signal of the optical fiber connection has to be converted twice between the transmitter and the receiver, it will produce a time-base jitter error that seriously affects the sound quality（Jitter）, The time base jitter error generated is about 20 times that of the coaxial connection. This is why the optical fiber interface has a strong digital flavor, lacks vitality, and lacks charm. Therefore, under normal circumstances, the optical fiber interface is not selected for transmission.

Balanced digital interface---80% effect. This is two times with the audio balance interface, don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t confuse it.

Advantages: It has strong reliability and long transmission distance.
Disadvantages: narrow working frequency band, time base jitter error（Jitter）It is about 10 times that of a coaxial cable.

The role of the decoder:

1. Because DVD players or low-end CD players are very large in society, but unless some players can score 60 points or more, I am almost dissatisfied with the others. According to my evaluation criteria, they fail.

When matched with our HiFi power amplifier, it will definitely not achieve the best effect, which will make our HiFi power amplifier unable to exert its due effect.

Some users feel that the effect has been improved significantly after changing our power amplifier, and the evaluation is very high. But in fact, because the decoding part is not good, only 2-3% of the power of our power amplifier is played. And many users are unwilling to invest tens of thousands of yuan again to buy desktop CD/DVD players.

In order to solve this problem, we launched this“Music Sword God” Decoder, as long as the DVD player has an optical or coaxial output, you can immediately upgrade the DVD player to the sound quality of a desktop fever CD player. In addition to DVD player, it can also be connected with CD, sound card, TV, satellite receiver, high-definition player, set-top box, HTPC high-definition computer, etc. with coaxial optical fiber output, as long as it has a coaxial or optical fiber interface, it can be used by plugging it in. , You can produce extraordinary sound effects. Even if your 5.1/7.1 PK is down in the same era, it''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s not a problem.

2. There are many free audio programs on the Internet, especially audio files in uncompressed formats such as APE are very popular, but the sound quality directly output by the sound card is not generally poor. It is of course possible to spend 10 million yuan to buy the so-called high-end sound card, but the cost performance is not high. It can only be used on a computer, not a DVD player or other equipment.

The super fever material selected for the power amplifier: as long as it is us“Music Sword God”Products and models must be exquisite.

The new Japanese ELNA FOR AUDIO series audio-specific fever capacitors, made in Thailand.

ELNAIt is a well-known veteran manufacturer of electrolytic capacitors in Japan, with many product series and outstanding performance. Features: Capacitors specially designed for audio. Sound: fast and powerful, suitable for expressing modern music. The bass is a bit thin, but it does not feel less low frequency, the sound feels very smooth, the sound field is relatively large, and the sound bottom is very quiet.
ELNA is one of the largest capacitor manufacturers in Japan (Rubycon ruby, nichicon sapphire, elna, NipponChemicon, Sanyo Sanyang, Panasoni). There are several varieties of tonic capacitors: CERAFINE (red robe), DUOREX (purple robe), LongLife (silver word), SILMIC (II) (brown god), FOR AUDIO (black background gold word). There are more than 60 years of vicissitudes. The research and development of audio capacitors has a history of 25 years, and it can be said to be the leader of the Japanese capacitor industry. The difference between the outer packaging of some famous brand capacitors in Europe and America is that ELNA likes to use different color casings between different models. Dedicated electrolysis. He can be found on many medium and high-end equipment. Especially in high-end Nissan equipment, it is almost the world of ELNA audio dedicated capacitors.

German WIMA Weimar supplement elixir, made in Germany:

German famous“ elixir” Produced by the company, red WIMA. WIMA capacitors are widely used in many famous foreign machines, which are the most well-known. The impedance is small, the speed is fast, the tangent loss is small, the sound quality is natural and balanced, the sound is gorgeous, and the resolution is extremely high.

Japanese Panasonic FM series gold electrolytic capacitors, gold letters on black background, made in Malaysia.

Compared with its predecessor FC series, the internal resistance is 40% to 70% lower. The reduction in impedance reduces the ripple current, thereby helping to reduce heat transfer, thereby extending the life of the device. In addition, the use of heat-resistant sealants and electrolytes can further extend the life of the device and effectively reduce vibration. FC has been in the field of fever for many years, and enthusiasts from all over the world definitely agree that it is a cost-effective fever supplement. The FM series of capacitors developed with Panasonic''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s advanced technology will replace the FC FK series in the future. The sound has an English style.

High-level brown shell gold-shaped capacitors for AWF/AVF audio from Japan Chemical, made in Japan.

Nippon Chemicon is the top six electrolytic capacitor manufacturers in Japan (Rubycon ruby, nichicon sapphire, elna, NipponChemicon, Sanyo Sanyo, Matsushita). In 1994, it annexed Sibi, the No. 1 electrolytic capacitor manufacturer in the United States, and established a branch plant, American Chemical, with no doubt about its strength. The AVF/AWF series is a high-end model specially designed for audio. The sturdy oxygen-free copper feet give people enough confidence. The 180,000 yen Marantz CD player CD-95 is only white, and it is not willing to use it. A few, our golden ones are better.

PHILIPS electrolysis, BC, axial electrolysis.

The sense of speed and energy is unparalleled, and the full frequency is hearty, and the density and texture of the Japanese electrolytic sound show the unique noble temperament of European products. Philips BC features: good transient response and sufficient resolution, the level outline and texture density of the big scene are good. In particular, Philips’ high-end aqua-blue axial electrolysis shows the momentum, dynamics, strength, and nobleness of the sound. Japanese fever electrolysis is also inferior to him by 3 points. It is often seen in top equipment such as Gawain in Switzerland and Guifeng from Denmark. Even if the flagship level of Japanese machines is considered for cost reasons, they are rarely used.

The highest grade of ELNA capacitors from Japan, SILMIC Brown God, made in Japan.

A capacitor specially designed for audio, using OFC oxygen-free copper feet, very low distortion (third harmonic distortion -120dB), very small tangent loss, natural silk fiber medium, high-quality sound, and exert the soft and natural nature of silk , Increase the volume of the low frequency, reduce the peak feel of the high-pass part and the rough sound quality of the mid-frequency part. Sound: fast and powerful, suitable for expressing modern music. The bass is a bit thin, but it does not feel less low frequency, the sound feels very smooth, the sound field is relatively large, the middle frequency is soft and sweet, and the high frequency is slender. For example, Japan’s Denon’s flagship CD and top-end amplifiers, Japan’s SONY’s SACD, CD, and power amplifiers, Japan’s Marantz MARANTZ, Japan’s Golden Voice’s top-end equipment, and European products“Music Journey” Power amplifier and so on, not a single example.

Japan''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s Ina ELNA Golden Prince Cerafine series fever capacitors, made in Japan:

Capacitor specially designed for audio, using OFC oxygen-free copper feet, very low distortion (third harmonic distortion -120dB), very small tangent loss, using the technology of pouring ceramic powder in the electrolyte, the powder diameter is controlled at 0.1 -0.15 microns. According to the manufacturer, this technology has two major benefits: First, it increases the damping effect on external vibrations. 2. When the ceramic powder is charged and discharged in the capacitor, it will adsorb the negative ions in the electrolyte and become more active ion groups. A thin film is formed on the surface of the anodic oxide film, which greatly improves the response speed to the signal and makes the sound quality It is more pure and transparent, but its price is large and expensive. Sound: The sound is relatively soft, the mid-range is warm and soft, the high-frequency is relatively gorgeous, and the fog is slightly heavier!

Decoding chip introduction:（In no particular order）

Many fans are struggling to find which decoder is best for them, so I will introduce some of my knowledge to facilitate everyone''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s choice. Of course, I also hope that experts will come to guide me. I am also exploring and researching. Take PCM1794/PCM1794 as 100 points to score the decoding chip.

Some of the more common high-end decoder chips are as follows:

As long as the following models can be designed, tuned, and done well, they can produce the best sound. The effects are indistinguishable, each has its own characteristics, and each has its own strengths. The indicator of the chip does not represent the quality of the sound. The key depends on the design of other circuits around it, which determines the quality of the final output sound.The following voice explanations are based on“Music Sword God”The highest level that the design tuning ability can reach. It does not include nor guarantee that other brands can achieve the same effect with the same chip. I don’t think many of them have passed the test. If it is found to be similar to ours, it must be a pirated version.

How much effect can be improved by connecting multiple DAC chips in parallel:

Many customers ask, how much effect can be improved by 2 or 4 parallel connections? How much is the difference between 4 pieces of 16BIT in parallel and 1 piece of 24BIT?

Parallel useDACIt can increase the number of equivalent bits, improve the conversion accuracy, and restore the thickness and strength of the music.whenDACWhen used in parallel, the signal-to-noise ratio and dynamic range will be improved, the distortion will be reduced, and various errors will be averaged and reduced.There are many ways to connect in parallel, with slightly different styles.

Generally speaking:2Piece18 bit DACThe conversion accuracy after paralleling is equivalent to19 bit,4Piece20 bit DACThe conversion accuracy after paralleling is equivalent to23 bit,and8Piece20 bit DACThe conversion accuracy after paralleling is equivalent to24 bit, Wait.PCM1704Wait24 bit DACBefore the advent of high-end digital audio24 bitConversion accuracy is to use multipleDACThe parallel method is obtained. So 4 16-bit parallel connection is equivalent to 19-bit effect.

From the perspective of human ears, the difference cannot be as big as the difference in the number of technical indicators. This is completely different from the computer CPU, 2 in parallel, the speed can be increased by 50%-100%.The technical index of 24BIT is 16 times higher than that of 20BIT（2 to the 4th power）, The technical index of 24BIT is 1024 times higher than that of 16BIT.But the sensitivity of human ears to sound is the logarithm of LOG, so after 2 parallel chips, the actual hearing effect is improved by about 10%.

So: 2 in parallel, an increase of about 10%. The increase of 4 parallel connection is even less, about +5%. 8 in parallel, about +2.5%.The more the number of pieces, the less the actual sense of hearing is improved. Generally, 4-8 will be connected in parallel, otherwise the capital cost can be increased by increasing other aspects. Therefore, with multiple DACs connected in parallel, the actual sense of hearing is not as much improved as many people imagine, and many are still for commercial advertising needs.

1. TDA1541:16BIT chip. Philips CD player king, widely used. Although it is 16BIT, the effect is first-rate 15 years ago, the midrange is warm and charming, and the music is full of flavor. It belongs to the warm and sweet type, suitable for classical music, listening to human voices, and is the best among these. The disadvantage is that the de-thinning power and dynamics are slightly inadequate due to the limitation of 16BIT, but it is not bad. It is easy to make and successful. It belongs to the old Huang Zhong. Some people think it''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s good and like the taste very much. I guess that the equipment around him is not the best, the sound is relatively hard, and the soft and warm sound style has a good effect on the hard sound equipment. But if it is equipped with more high-end equipment, such as our musical swordsman equipment, the flaws of 1541 will be exposed without any doubt. I personally feel that the resolution of the treble is insufficient, and the transparency, inspiration, and reverberation produced by the high-end equipment is very lacking. The midrange is warm, but lacks the air, and cannot resonate. I feel the internal organs have a slight vibration, and the friendly midrange. The bass is relatively good. It is a looser type. Some people like it, but I think it is more capable and more suitable for most customers'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' hobbies. The overall effect is 55 points.

2. TDA1547:18BIT chip. The upgraded version of 1541 has higher indicators, but Philips and other major manufacturers feel that it is not good, so they continue to use 1541. Many fans feel that the taste of music is not as good as 1541, so although the index is high, the actual effect is not necessarily better than 1541. Fewer manufacturers are used, and the maturity of peripheral supporting circuit design is relatively low. The overall effect is 55 points.

3. PCM57:18BIT chip. A generation of classics uses a lot of machines. I don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t have much research on this. It is also an older chip, which supports multiple chips in parallel.

3. PCM63:20BIT chip. A generation of classics uses a lot of machines. I don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t have much research on this. It is also an older chip, which supports multi-chip parallel connection.

4. AD1955:24BIT chip. A chip that makes people love and hate. The details and dynamics are very good, and the sense of energy is good. Except for PCM1704/1794, this is probably the most detailed/dynamic/resolving power and belongs to the fierce type. But some people think that the sound is like boiled water and lacks musicality. Anyway, this has its own merits. But I found that this 1955 is difficult to do well. The high pitch is easy to get ridiculous. I have heard that several AD1955s are not good. The high pitches are too bright and harsh + lack of musical appeal. I haven''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t heard a successful case for the time being. According to enthusiasts“ Yutian” The 1955 version is good, but the price is great. The design of AD1955 needs to be able to be programmed by software. It is difficult to fully utilize the advantages if only the hardware is used. The overall effect is 60-90 points, depending on the circuit design. Japanese golden voice prefers AD1955.

5. CS4397:24BIT chip. American Crystal Company chip, high-end main model. The sound is neutral, the music is appealing, the resolution and dynamics are higher than TDA1541, and the music taste is higher than AD1955, which is between the styles of 1541 and 1955. This characteristic creates a thicker sound, the most delicate treble, a neutral and warmer sound, and a sweet sound. A large number of famous machines are selected, such as the MBO machines in the United States, with many reference lines and mature designs. 4397 is big foot. The overall effect is 75 points.

CS4390:24BIT chip. The sound tastes good. It belongs to the type that the more you listen to it, the more tasteful it is. The sound is more peaceful and the music is strong. It belongs to the European style of music. The overall effect is 75 points.

CS4396:24BIT chip. The sound dynamics are good, the bass is strong and powerful, and the treble is also good resolution. I like it very much. It belongs to the American style and it is full of dynamics, quite AD1955 style. The overall effect is 80 points.

6. CS43122:24BIT chip. It is 2 points better than the CS4397 for high pitch resolution, 1 point for midrange, 1 point for bass texture, and 10% better actual effect, with slightly different timbre. It was the flagship model of Crystal Company that year. The chips are now in production. The overall effect is 90 points.

7, CS4398:24BIT chip. The new chip introduced after the CS43122 was discontinued is the highest-level model of Crystal. The sound style is similar to CS43122, and now it is fighting side by side with CS4397 in the DAC decoder chip market. The surrounding circuits are designed, and the dynamics are by no means inferior to higher index chips such as PCM1704/1794. Expressed voice: warm and delicate, probably the most delicate of these chips, listening to singing is very good, full of emotion, good performance in detail, dynamic indicators are also very high, soft with rigidity. 4398 is little feet. The overall effect is 80 points.

8. PCM1702:The 20BIT chip is an early version of PCM1704. The price is not expensive, the sound is more analogous, the midrange is thick and warm, and the resolution is not very high. It is equivalent to the simplified version of the 24BIT PCM1704, and the output current is not large, so multiple chips are needed in parallel. For good results, usually 2-4 pieces are connected in parallel, which has about 7 success power of PCM1704. Because the 1702 chip is not expensive at around RMB 20, many mid-range DACs were adopted 10 years ago. 70 points.

8. PCM1704:24BIT chip, before 1794/1792 came out, this one is. Inside itself is 2 23BIT chips fully balanced output, so the effect is very powerful. For example, Maijingtu MX-5000, the king of CD players, is widely used. The old chip has mature peripheral design, and the actual effect is hard to distinguish between the new 1794. It seems that I have to make more than 2500, and Rite made an 8000 yuan, and the price is more expensive. The sound is very calm, the bass bouncing power is good, the energy is sufficient, the dynamics are sharp, and it belongs to the more aggressive style. The voice is not rough, and the vocal performance is also very good, which is rigid and soft. The disadvantage is that the output current is relatively small, only a few milliamperes, so after connecting multiple pieces in parallel, increasing the output current can have a better effect. Generally, 2-4 pieces are connected in parallel. The price of PCM1704 is more expensive, about 200 yuan per piece, plus power supply and wiring, multiple parallel connections are much more complicated, so naturally the price of multiple parallel 1704 is not cheap. Comprehensive effect, 100 points.

9. PCM1794:24BIT chip. After 1704, the new chip is now available. It is the work of the famous American Texas Instruments BB company. The performance index is recognized, the price is several times more expensive than other models, the most expensive. The details, dynamics, and resolution are as impeccable as the 1704. It also has a pretty good musical taste. The sound effects are almost the same as those of the PCM1704. It belongs to, relaxed atmosphere, light weight lifting, very relaxed and leisurely, bass dynamic performance is also very good, the listening sense is relaxed, and it can be static and dynamic type. That is, the price is more expensive, and more complicated supporting lines are needed to achieve the highest and strongest effect. After listening to good 1704/1794, the sound is very unforgettable. Many foreign countries use 1704/1794 as the core, and decoders worth more than 10,000 yuan are everywhere. What''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s more, use 2 parallel or 2 differential + 2 parallel（4 in total）, As a decoding, so that his dynamics can be doubled again, and the current drive capability is doubled to achieve extremely high results. The sound is also thicker. It''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s cheap to sell for tens of thousands. The PCM1794 itself has a strong current output capability, which is several times that of the 1704, so one piece of 1794 can produce very good results. Moreover, the PCM1794 chip itself is designed to support dual-parallel mono mode, and one 1794 is used for one channel. Comprehensive effect, 100 points.

10. PCM1792:24BIT chip. The latest. The technical indicators, performance, and pin position of 1794 and 1792 are exactly the same. The difference between them is that 1794 supports hardware control, and 1792 supports software control. Because the 1792 design also needs to add a software to write, the warranty replacement is more troublesome, so the general HIFI designers prefer to use 1794 or 1704. People who are familiar with digital software design like to use PCM1792. Unfortunately, people who use 1792 are generally only familiar with digital circuits and don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t understand HIFI, so the effect of making 1792 machines is mediocre. As a result, the sales volume of 1794 was several times that of 1792. There were more manufacturers and the peripheral circuit design was more mature. Comprehensive effect, 100 points.

11. PCM1798:24BIT chip. 1794, 1792, and 1798 are three brothers. PCM1798 is a simplified version of 1794/1792, which is more cost-effective. The overall effect is 80 points.

12. PCM1793:24BIT chip. In 1793, this small DD is not a high-end DAC chip, but now there are many people who use it, and many people ask me, so I write here. According to the positioning of PCM, this one is 2 gears lower than 1798, and it also belongs to To make cost-effective products, but the surrounding supporting circuits are simple and accommodating. Successfully produced. The sound coming out is not bad, it''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s a standard sound, it doesn''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t use too much components around, and the tuning is relatively simple. Some people think that if it is done, it is completely possible to PK off Lao Huang Zhong 1541. After all, the times are advancing. The combined effect is 60 points.

13, WM8741:24BIT chip.The new product, Wolfson Microelectronics, has a high index, but the actual listening effect is inferior to his technical index. It is still incomparable with PCM1794/PCM1792. Generally speaking, it belongs to the delicate and sweet sound type, with a relatively peaceful sound, with some European and British flavors. Some people may be the closest to the chip that simulates the taste of music. But the disadvantage is that the compatibility is worse than CS4398. If the hardware control and software design are not very good, some strange problems are prone to occur. This chip is the same as the AD1955. The product circuit design and tuning have a greater impact on the sound. At the beginning, I heard several WM8741 machines made by fans, and the effect was very poor. However, I have studied carefully recently, if the peripheral wiring and tuning are done well, the performance of this chip is still very good.“English lotus” I prefer to use WM8741, which has the taste of European analog music, but I have not heard any good WM8741 works. The overall effect is 80 points.

14, ESS9018:The new one supports up to 32-bit 1BIT chips. The indicator is the strongest in the industry, and the price is more than 300, which is very expensive. Multi-BIT chips generally have a relatively open sound field, good bass performance, and strong music flavor. The 1BIT chip has better mid and high pitch, gorgeous sound and high resolution, but it is related to the BIT stream. The digital taste is stronger than the multi-BIT chip, the sound is harder, and the bass effect is not as good as the multi-BIT chip. Therefore, in the 16BIT CD era, there were also 1BIT chips. In general, the multi-BIT chips finally won. 1BIT has very high requirements on the time base, and it is best to use a temperature-compensated crystal oscillator to stabilize the frequency. Specific new products, so the tuning has yet to be summarized by experience. So the combined effect is 90 points.

PCM1704/1794/1792 has a strong sense of real presence and natural overtones. The sound is exquisite and embossed, the texture is very good, and the expressiveness is very strong. Today''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s best DAC has a much higher appearance rate in high-end CD factory machines than other models, but it requires extremely high skill of the designer, and it is easy to make noise if the design is not good. If you want to buy works from the DIY circle, it is not recommended to choose this.

The biggest feature of ESS9018 is its good analysis! This has surpassed one''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s own“Ultimate 1704” Now, when I listen to it, I have a lot“If there are hundreds of fish in the pond, they are all like swimming in the air without a place to rely on.” The feeling. At present, the industry-level audio DAC ES9018 was launched by ESS, which supports 192K/32bit, I2S/DSD/SPDF input, DNR: 135dB/Mono, 129dB/8ch, THD: -120dB. ESS also launched ADC ES9102.（THD -120dB）.

In other words, PCM1704 sounds better than ESS9018, and ESS9018 has better resolution than PCM1704. PCM1704 emphasizes smooth and sound field and is more hifi, while 9018 emphasizes details and sound density, and is more digital.

Under the same peripheral design conditions, DAC chip sound effects, comprehensive ranking:

No. 1: PCM1794/PCM1792/PCM1704.（The current chip, the best chip in the 24BIT era, is also several times more expensive than the following ones）

No. 2: ESS9018（The chip with the highest index in the world currently supports 32-bit/500KHZ, 1BIT high-speed chips. It is a strong competitor of BB.）

Third place: CS43122/CS4398/CS4397/CS4396.（The best CS43122 has been discontinued, otherwise it will be able to compete with PCM1794. Unfortunately, only CS4398 is available in large quantities now.）

No. 3: AD1955（Since the performance of AD1955 varies greatly with the level of design, less than 1% of the well done, so it is temporarily ranked the old 3, if the design is well, it can be completely ranked the old 2.）

No. 3: WM8741.（The sound effect of this chip is not worse than that of CS4398, but the compatibility is inferior to CS4398, so it is a bit behind）

No. 4: PCM1702.（One of the better chips in the 20BIT era. After all 10 years agoHuang Zhong, 20BIT is 16 times behind 24BIT in terms of indicators.）

No. 5: TDA1541/TDA1547.（The best chip in the 16BIT era. After all, the old Huang Zhong 20 years ago, 16BIT is 1024 times behind 24BIT in terms of indicators.）

Comments from customers who have purchased:（The following are written by customers, and they are all true descriptions）