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Hai Wei (Mr. Lim)
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D-77
(Dual ES9038Pro +1 FPGA )
Dedicated Discrete Fully Balanced DAC
DSD , DXD support from USB and I2S
32bit / 768K Dual Sabre ES9038Pro
32bit / 384K Asynchronous Transfer Amanero
Built in OCC

The different between dual ES9038 Pro and single ES9038 Pro is large:
The different not only the DNR, but the dual ES9038 Pro working under mono mode, the channel crossing is improved for offer a larger and exact sound stage.
Even the ESS9028 Pro, working under mono mode, its DNR had 3DB better than one ES9038 Pro .

The FPGA is important in the D-77:
The FPGA is Programmable Array Logic.
Nowdays the FPGA had applied in a lot high end grade DACs, like the popular ROCKNA WAVEDREAM DAC.
Its inside hardware construction can through the complex software to design and arrange, and it can upgrade through the software upgrade.
While upgrade the firmware, just same as upgrade the hardware. The design is much flexibility , can improve on sound quality , addition the newest functions , and it can never become out of date.

What the FPGA duty in the D-77:
1, Separate the data feed to dual ES9038 Pro, let them working in mono mode.
2, Clock re-clock process and FIFO design for all inputs , the output data can exact synchronization with clock signal, reject jitter, improved sound for all inputs.
3, Built in high performance SPDIF interface , give up the built in low performance SPDIF interface of the ES9038 Pro, much improved on the sound quality with SPDIF inputs .

Specifications
S/N Ratio
>120DB (XLR output)

THD
<0.0003%

Output impedance
4.7 ohm

Output Level
2.5V (RCA)
5V (XLR)
2+2MA (ACSS)

Input Sensitivity
0.5 Vp-p(75 Ohms, Coaxial)
19 dBm (Optical)
　
Frequency Response
20Hz - 20KHz (< - 0.1DB)

Support Operate Systems (USB)
Windows , OSX ,Linux, ISO

Support Sampling
PCM of USB and I2S: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz , 192kHz, 352.8kHz,384kHz
DSD of USB and I2S: DSD64 , DSD128, DSD256
Coaxial model: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz ,192kHz
Optical model: 44.1kHz, 48kHz, 88.2kHz, 96kHz
　
Power Requirement
Version 1: 100-130V AC 50/60 Hz
Version 2: 220-240V AC 50/60 Hz
　
Power Consumption
30W
　
Package Weight
Approximately 5.5KG

Dimensions
W240 X L360 X H80 (MM, Fully aluminium )

Accessories
AC power cord X1
USB cable X1