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Audio-GD D-77 / D77 Dual ES9038Pro +FPGA Fully Balanced DAC

    Audio-GD D-77 / D77 Dual ES9038Pro +FPGA Fully Balanced DAC

    RM 4,399.00

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    Estimated Arrival : 7-10 working days.
    First unit : RM 0.00 
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    RM 60 by courier to Sabah, Labuan
    RM 60 by courier to Sarawak
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    Product ID : 213620350
    Brand : Audio-GD
    Model / SKU : D-77
    Conditions : New


    Audio-GD D-77 / D77 Dual ES9038Pro +FPGA Fully Balanced DAC

    Audio-GD D-77 / D77 Dual ES9038Pro +FPGA Fully Balanced DAC


    Audio-GD D-77 / D77 Dual ES9038Pro +FPGA Fully Balanced DAC

    KINDLY PM FOR LATEST STOCK AVAILABILITY BEFORE MAKING PAYMENT
     
    Hai Wei
     
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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






    Audio-gd products had design and test based on the AP SYS-2722 (The top-drawer professional equipment in world)


    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The design is much flexibility , can improve on sound quality , addition the newest functions , and it can never become out of date.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 .

    Full discrete output stages:

    The signal last stage is the analog output stages, they can much effect the whole DAC sound quality.
    The output stages working after ES9038 pro, they are full discrete transistors and 0.1% vishay resistors built in.
    The high speed ACSS amps as the signal gain and process, they are non feedback design and working with current signal , so the dual ES9038 pro output current signal can through the ACSS amp , don't like others design want to multiple conversion the signal between current and voltage.
    The output buffers are the single ended FET design .
    In total the ACSS output stages are working in pure class A state, and without any negative feedback for the most pure and real like sound reproduce.
    There are 4 pcs OPA built in as DC serve , so the DAC can working well without couple caps and output the most neutral sound.



    Heavy power supplies design:
    There are in total 14 groups PSUs .
    A total 11 groups ultra speed linear PSUs group become dual stages PSU for remove the power interrupt , give the digital circuits working under the very clean power supply .
    2 groups pure class A PSUs for power supply to the analog circuits made the sound more analog.
    The control and display circuits power supply by a separate PSU for avoid the interrupt between them and signal circuits.

    Specifications might subject to change without prior notice for product improvement.
    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


    Last Updated @ 3/17/2019 2:35:53 PM



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    Warranty Period

    1. All products purchased from Stars Picker Enterprise are warranted under different terms and for different warranty periods as offered by the specific manufacturer or distributor.
    2. The warranty period begins to run as of the date when customers receive the product.

      Coverage of the Warranty

      1. The buyer is entitled to claim for warranty for damage to the product in transit, defect in workmanship of the product, delivery of a wrong item of product, or any other damage caused by reasons other than fault of the consumer, and all cost and expenses incurred for the shipment of the product will be borne by us.
      2. The warranty does not cover damage caused by human factors, accident, misuse of the product, unauthorized alternation to or change of parts or components of the product, act of God or problems of power supply.
      3. No warranty is offered for products which have gone beyond the period of warranty. We can arrange to send back the products for repair but any cost incur will be bear by customers.
      4. No warranty is offered if the warranty label on the product is altered or damaged.
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