The board is compatible with ES9018S and ES9028PRO ES9038PRO, ES9028PRO has slightly higher indicators and supports coaxial fiber decoding DSD , ES9018 can only decode DSD on USB, the default delivery is still ES9018, if you want ES9028, please note before delivery（Because the supporting CPU is different）
At present, the industry audio DAC ES9018 was launched by the American ESS company. It supports 192K/32bit, I2S/DSD/SPDF input, DNR: 135dB/Mono, 129dB/8ch, THD: -120dB,
ES9018 is an 8-channel digital-to-analog converter, each channel has 4 independent DAC channels in parallel output mode, and integrates all-digital SPDIF reception and filtering and DA. I2S/DSD/SPDIF input, I2S interface can support up to 32bit 500K sample rate AUDIO files, with the highest indicators and analytical power, revealing the most subtle parts of music.
The schematic diagram of the kit, you can download this file package, there are schematic diagrams of all the kits in this shop
Note 1: For ES9028 and ES9018, the supporting CPU is different. In addition, the IV part of ES9018 uses 4 680 ohm resistors.ES9028PRO is 560 Euros,ES9038PRO is 120 Euros
http://pan.baidu.com/s/1gfgF22B
Price description: The kit does not include ES9018IC and three RCAs. In addition, the USB card needs to be purchased separately, otherwise it does not support USB output.
The board does not need to be debugged, and the sound can be heard if the soldering is correct, and the patch needs to be soldered by yourself
The finished boards and kits are delivered to TI NE5532 JRC5534 has 2 op amps each, used as a test board only, customers can purchase more high-end op amps separately
The finished boards and kits do not contain XMOS daughter cards and need to be purchased separately
Italy daughter card link address:http://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-1582420965.12.tg7XW4&id=45131341821
XMOS daughter card link address:
http://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-1582420965.31.AdiIjy&id=520126137045
Chassis link address:http://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-1582420965.17.L6dsyP&id=22548235665
PCB size: 170MMX153MM
Power selection:（There are R and O cows available in our shop） Dual 16VX2 single 9VX2（6VX2 is recommended for ES9038） Allowable error, because the board has a voltage regulator, the range is relatively wide
Military grade 4 layers of gold-plated 4 layersPCB The version has a complete ground plane, shorter signal channel, and better electrical performance. It is made by DAC.
Equipped with LCD display and key operation panel. Operation and display are more intuitive.
The operation interface can operate and display the current input channel and input signal format（PCM or DSD), the current filter mode（Fast or slow）, The current volume status（0dB max）Wait
When the display MUTE is muted, you can press each button individually for 5 seconds without releasing it to reset
The versions are divided into standard and deluxe versions. In fact, the materials of the standard version are not much different from those of the ES9018 with more than 2,000-3,000 levels on the market. It is not necessary to buy the deluxe version. See below for detailed list
The Italian Amanero USB card is currently a very good USB digital interface. It supports DSD and has excellent detailed analysis capabilities. At present, many ES9018 machines above 3-4000 yuan are in use.
Andrea Ciuffoli organized Rome enthusiasts to evaluate a variety of USB interfaces such as Amanero, WaveIO, M2Teck, and QNKTC, among which Amanero had the highest evaluation. Amanero wins in terms of openness, detail, texture and fluency of the sound field
Of course XMOS is also good, the current digital interface mainstream
The machine is equipped with coaxial, optical fiber, and USB input interfaces, all of which support 192K 24BIT format. USB supports up to 384K 32BIT
Equipped with balanced output terminals and RCA terminals
This is the ESS8018 chip, the core of the DAC. It can be seen from the picture that the power supply decoupling is done very well. There are 8 core DACs, each of which uses independent decoupling capacitors and circuits. Ensure the full play of the chip
The analog output circuit of ES9018 is composed of 2 dual op amps and 2 single op amps. I personally like the combination of MUS8920X2 and AD797X2, which is delicate, durable, and extends the sound field very well. The analog circuit material is also the lower foot material, the British FR4 non-inductive resistor, the mica capacitor, the German black WIMA, the ELNA brown god capacitor（Standard version uses Nikon or Panasonic FC capacitors）
Capacitance is the key to tone adjustment and the guarantee of lust, the standard version adopts the UKNovartis capacitors, the sound is sweet and natural, and they are very durable. Now the 4-6000 ES9018 dual-parallel machine on the market uses this series of capacitors, and the luxurious version uses Japanese ELNA FOR AUDIO 4700U capacitors.（KG 6800U in the picture is out of stock）, Extended, more dynamic
LT®The 1963 series are low dropout regulators, optimized for fast transient response. The device can provide an output current of 1.5A and a dropout voltage of 340mV. The working quiescent current is 1mA and is reduced to< 1μA. The quiescent current is in a well-controlled state; unlike many other regulators, the quiescent current of this device does not increase under differential pressure. In addition to fast transient response, the LT1963 regulator also has low output noise, making it ideal for sensitive RF power applications
The price is also very expensive, close to 20 yuan for 1
The 0.1PPM high-precision, low-phase noise and temperature-compensated crystal oscillator provides an excellent core reference frequency for the ES9018.
British non-inductive resistors, good-sounding resistors, are more natural than DALE resistors, and have excellent penetrating power. The price is as high as 1 yuan per unit, which is not a high fever.
The following is the difference between the standard version and the deluxe version. The red place is the price difference.