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  • Description




    1. Class A balanced Structure


    The part of headphone amp,GDX,designed absolutely four groups of amplifier,provided balance amplification


    drive,and the output grade was in a state of class A .After testing many times ,we choose the combination of


    OP275 and LME 49710 matching class A output.And that benefit many headsets drive.Adding to using


    classic relay to control the volume adjuster system of resistance transition,the part of headset was not the


    short stab.




    2. USB Interface


    GDX use asynchronization states XMOS U8 mode to handle the USB signal macthing with special  XMOS


    clock system  ,supply XMOS with extemely low digital noise and precise clock signal.GDX also provide


    S/PDIF signal output as high quality USB to S/PDIF.


    SUB Output high support PCM:32Bit/384KHz;DSD64/DSD128.






    3. D/A Framework


    GDX use AK4118 as S/PDIF signal output demodulation,supply low JITTER ,IIS signal to the next


    grade.S/PDIF signal output high support 24Bit/192KHz.


    Use AKM AK4495S as D/A chip,we designed for super high speed ,low noise power supply system ,provide


    the best running environment. We designed low distortion,low noise,high dynamic range analog output


    circuits,and to achieve a perfect state .In order to achieve a better sound we select component


    carefully,Panasonic ECHU resistor  ,Murata COG,  VISHY resistance, NEC signal relay and so on.






    4.Perfect I/O Port


    Through the selection of the panel the GDX can be used as a pure digital decoder, which isa high-quality


    fixed-level output decoder. At the same time GDX provides 80 level adjustable volume control, can be used as


    pre-output level transferring professional active speakers. Perfect digital input: USB, optical fiber, AES,coaxial


    digital signal input, improve a group of USB to S/PDIF digital signal output, can be used as USB digital








    5.Specially developed clock system


    A special Super low phase noise SPXO low phase noise audio crystal oscillator is used to provide ultra-low


    phase noise clock signal for the whole machine. A complete digital signal processing system is designed to


    provide FIFO,DE-JITTER processing for various IIS signals. The whole digital system works at a high


    frequency, so we choose up to 14 sets of regulators for ultra-low noise power supply at all levels, as well as


    an optimized four-layer PCM LAYOUT.

GoldenWave GDX GD-X DAC Headphone Amplifier

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