MH-DA004 has two configuration versions:

1. Standard Version: standard Amanero USB module, uses an ordinary active crystal oscillator,

No independent power supply, Powered via the USB port

2. USB Upgrade version: Is uses two Crystek CCHD-957 Active clock with ultra-low time base jitter.

An ultra low noise linear power module is designed for the work of USB.

PS:

Bundle1: Black color + Standard

Bundle2: Silvery color + Standard

Bundle3: Black color + USB upgrade module

Bundle4: Silvery color + USB upgrade module

Independent power module

ES9038pro is ESS's flagship DAC audio decoder chip, is currently able to see the highest performance index DAC chip, according to the practice of Mu, the use of two ES9038pro, respectively, work in the mono MONO mode, making two DAC chip Individually deal with the left and right channel audio content and do not interfere with each other, greatly enhance the DAC's performance and auditory effects. Mono MONO mode The official indicator is the dynamic range of 140dBA, which is 3dB higher than 137dBA when working with a single two-channel channel. The official indicator is for reference only, but it is easy to see that the monaural MONO Mode, the signal output current of the DAC is twice as high as that of the two-channel mode, and the darkness of the sound background, the density of the sound, the degree of separation, the motion, the knot, etc. can be made significant Of the promotion.

Have enough experience enthusiasts know, DAC chip is only a machine foundation, the most critical is the external circuit design and adjustment, in order to achieve the use of ES9038pro and get the best sound replay effect, L.K.S Audio uncompromising around Circuit design, such as the use of two high-quality transformer to achieve six sets of AC power supply, a total of 13 groups of low-noise regulator circuit (a lot of key parts of the use of two-level regulator approach), the second level regulator using the industry to high performance Power supply chip to provide a sufficient current margin, the reaction of fast, ultra-low noise power.

At the same time, in order to deal with ES9038pro unique MONO mode of large current output (more than 100mA of signal current), specially designed IV conversion circuit, this part of the circuit for the pure sub-design, the substrate is the current low noise indicators Audio transistor, twin effect transistor, audio power tube, etc., the correction capacitor is also uncompromising use of silver mica capacitors, the purpose is to get the most accurate, natural voice to reproduce. This circuit mode is the traditional integrated op amp output (such as OPA627, AD797, LME49990, OPA1612, etc.) can not match.

L.K.S Audio in the most critical place to carry out the following design:

1. USB part, Mu has always adhere to the use of Italy Amanero's USB program, which is the industry's leading USB playback program, recognized that the program sound better than the popular xmos, and L.K.S Audio in the Italian original on the basis of improvement, based Board usb module will use six groups of ultra-low noise LDO for sub-power supply (and the original is two LDO). In addition, in the usb upgrade version, Mu sound using two Crystek ultra-low noise clock to upgrade, and provides a decoder power transformer self-powered ultra-low noise power supply module to usb module power supply, sound enhancement effect , Very suitable for the computer as a player to use the enthusiasts. And thus one can save the cost of purchasing an external digital player.

2. The key master clock position, the same uncompromising, uses the Crystek CCHD-575 femtosecond clock to provide a very low jitter (82fS @ 100MHz) clock supply for the ES9038pro. Experienced burning friends know that digital audio recovery, the clock is the soul of the system, the importance of the clock can be seen. And in order to pure the clock signal, L.K.S Audio from the source - power grab, regardless of the cost of using a separate set of AC power, after two ultra-low noise regulator after the supply of this clock alone, greatly enhance the sound The stability of the background, the stability of the sound imaging.

3. L.K.S Audio for the left and right channels were working on the two ES9038pro DAC chip design of the independent power supply, making the left and right channel power crosstalk as low as possible to a very low state, which is brought about by the excellent sound separation Degree, very accurate sound imaging stability.

4. L.K.S Audio three years ago to proceed with the development of discrete circuits used to replace the traditional op amp chip, because the traditional op amp chip is subject to the chip size and SOC integrated circuit of some innate factors, the composition of the internal circuit of the monomer parts Performance is very limited, can withstand the heat power is very low, basically all of the integrated operational amplifier chip quiescent current is in a very low state (less than 10mA), even if the enthusiast of the senior opa627 gold seal version is the case, Processing ES9018 / 28/38 more and more audio output current (ES9018 / 28 in the mono mode output current is about 30mA or more, while the ES9038 is more than 100mA), so the overall quality of performance can not meet the demanding needs of enthusiasts The The output of the sub-output circuit, the use of twin JFET field effect transistor input, the last pole 3A power tube output, you can easily meet the ES9038pro high current output processing, and after three years of accumulated over 100 circuit parameters tuning, sound Performance is extremely natural, Chiang Kai-shek, high and low frequency of the ductility is excellent.

5. With a high standard of analog output circuit,  In order to meet the best performance of this circuit, in particular the design of the same high-grade A (A) power circuit, constant current source SHUNT circuit mode design, ON Semiconductor high power Adjust the tube, and use Jensen new electrolysis, with the appropriate output capacitor and decoupling capacitor, natural sound, transparent, very balanced and very musical appeal.

6. High-grade system inside, the impact of each little detail can not be ignored, using Furukawa FI03 gold-plated power outlet, Cardas rhodium-plated RCA audio output, Neutirk balanced output, etc., these components for high-calorie players That is the most familiar. It is precisely the focus of these key parts in order to create a good sound system.  for the customer standard Swiss Schute frozen version of the fuse, the sound performance of fine, moist, quiet and good, more obvious can be compared to the general fuse is rough, grainy.

Product description:

1. AC power input socket use Furukawa FI-03 with a gold-plated power socket, Furukawa copper power socket can enhance the sound of the thickness and sophistication.

2. Use 2 specially designed high-quality audio with oxygen-free copper 50VA toroidal transformer.

3. Transformer input AC rectifier diodes using Philips ultra-high-speed high-current diodes.

4, the primary filter large capacitors using nichicon KG top capacitor, the other capacitor using nichicon FG and panasonic top-level FM series with. the other key parts use the ultra-low ESR solid-state capacitors,to reach the effective absorption of power supply noise, that has a very significant contribution for the stability of the sound bottom .

5. Analog part use high-power audio components of ON Semiconductor A discrete power supply components.

6. Low-voltage digital, analog circuit using low-noise ON Semiconductor low-voltage regulator, and each functional components have a separate regulator supply.

7. The use of ultra-low contact resistance Fujitsu Takamizawa signal relay as a switch machine mute.

8. Audio output use Cardas card master rhodium-plated RCA seat, rhodium-plated RCA seat oxidation resistance and can significantly improve the wear resistance of the socket,althoughlong-term use,it will not lead to poor sound quality. At the same time, it is very helpful for enhance the cohesion of the sound .

9. remote control function, the user can more easily manipulate the decoder, power, standby and all other functions can be completed by remote control.

10. The use of expensive large-size VFD vacuum fluorescent display. Features are expensive, high quality.

11. We chose the imported nickel-plated screws, high precision, beautiful appearance, and durable anti-oxidation, to prevent the cover screws rust affect the appearance.

This machine uses the top Italian Amanero USB module, support PCM and DSD decoding in USB access mode, PCM supports 44.1K ~ 384K various rate, DSD supports DSD64, DSD128, DSD256, DSD512 (Windows).

32/64-bit XP / Vista / win7 / win8 / win10 is supported, and a proprietary driver (KS / Wasapi / WDM / ASIO) is required.

Mac OS 10.6+ and Linux UAC2 do not need to be driven.

Technical parameter:

1. ES9038pro parallel two-channel decoder, use two ES9038pro chips, ES9038pro work separately in the left mono and mono mono mode, the benefits are doubled than single-chip output current, the sound density is stronger, the details More, better sense of music.

2. Multi-channel independent power supply, left and right channel power supply, the power supply of each part of their duties, effectively improve the function of different power block interference. The analog output part adopts specially designed fully separated parallel power supply (200mAX2 fully separated Class A parallel power supply circuit, constant current source + mirror amplifier circuit + Wollman circuit extension frequency), which contributes greatly to the sound, the overall tri-band sound balance, low frequency Dive depth, IF thickness, high-frequency delicate and texture than ordinary linear power supply has greatly improved.

3. Built-in specially designed Italian Amanero USB module, the original license license to support the SACD replay, which is currently on the network high-definition music playback is a very powerful weapon. USB module adds a separate chip, you can cut off the computer after the insertion of USB to the overall SNR of decoding.

4. Support USB, I2S / DSD single-ended signal (RJ45), I2S / DSD balanced signal (HDMI), coaxial, BNC, AES / EBU balance.

5. Analog audio output includes standard RCA single-ended output and XLR balanced output

6. Display using VFD display, the display is exceptional.

7. The use of physical buttons easy to operate.

8. Support 0 dB ~ -127dB digital volume adjustment, 0.5dB level, very fine adjustment. But also has a remote control a key to skip the volume adjustment function.

9. Support a variety of digital filter mode settings (see the user manual). Can be arbitrarily selected, the attenuation characteristics of digital filters are different the different filter mode

10. Support decoding internal digital phase-locked loop bandwidth settings (see the user manual).

11. Support Deemphasis to turn on or off.

12. The display has 4 levels of brightness adjustable. Adjust by remote control.

13. Remote start, standby function.

14. Most settings have a memory function, the shutdown will automatically save the settings and the next start with the last shutdown when the state.

15. Dynamic range> 135dB

16. Distortion <0.0002%

17. Stereo resolution> 112dB

18. RCA unbalanced port output amplitude 2Vrms, XLR balanced port output amplitude 5Vrms.

Machine dimensions 430 * 320 * 90mm

20. The net weight is 7.0kg

Packing list:

    Machine accessories include:

    1. remote control * 1

    2. manual * 1

    3. Product certificate

    4. Power cord

    5. USB cable

     6. USB driver and use the settings method to download

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