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R-1
 
(2021 Version)


 8 group fully discrete R-2R DA modules to combine into real balanced push/pull decoders.

4 group fully discrete real balanced DSD native decoders.

Fully discrete real balanced  current transmition design.

2 pc ultra high frequency 90/98 MHz Accusilicon 318B femtosecond clocks provide synchronous clock for whole unit without PLL up-frequency .

32bit / PCM384K /DSD512 asynchronous transfer Amanero 384 apply the FPGA synchronous clock.

The whole digital circuit built with 1 pc FPGA and 5 pc CPLD programmable chipsets to separate the different configured circuits for avoid interrupt, data process in parallel mode.

Support firmware update to improve on sound quality.

All digital process mode settings accessible by buttons on front  (No need  to open the chassis).
Firmware update port accessible on rear (Update  firmware n
o need  to open the chassis).
 

       

    
Please note: The product improve cause the inside or outside change without inform .

Summarize Use Manual Specs Custom Option Shipping Cost

Please not:
        The DAC had burn in over 100 hours before shipping .
        You can power on it with playing music if you are at home for quickly finished burn in. If you don't want listen music during the burn in term, you can turn the amp volume to minimum.
        Please power off before connect or disconnect the inputs and outputs .
        Power on the product must had more than the half minute after last power off .


 


Function introduce :
         The DAC can setting the digital process functions on front plate to change the sound flavors, without open the unit .



       

Important warn:
         Before push the
"Setting" button, we are advice user turn  low  the amp volume, stop the music track playing .
         Because for the aim to reproduce the best sound quality, the DAC without mute design , change the setting may output circuit switch sound .
         Around 5 seconds after non any button had push, the display stop blink, user can click the music track to playing and  turn up the volume.


Setting button :
         
The setting menu had two pages. The first page had 3 digit LEDs display , and the second page had 2 digit LEDs display.
         
Push the "Setting" button one time, the one digit display will blink for active the function setting , push the "Selector" buttons can change function . While the display blink, push "Setting" again , the next digit display will blink . If the Synchronizer blink but push the "Setting" , the menu will change to 2nd page .


       

OS/NOS (Oversampling) :
         "O" for select oversampling, "N" for select NOS mode.

Mode  ( OS and NOS modes):
        
 While OS setting on "O" mean the DAC working under oversampling mode, lower number OS modes sound became warmer and smoother. Or depend on your sense .
         Mode "0" : class technology NOS mode.
         Mode "2" : 2X oversampling.
         Mode "4" : 4X oversampling .
         Mode "8" : 8X oversampling.

         While OS setting on "N" mean the DAC working under NOS mode, it has one mode now, it is the full new NOS configure design.

DITH( Dith)
         
Active (1) or Disable (0)  dither for all inputs.

TDA(Simulate SAA7220 +TDA1541A sound) :
          
Active (1) : Simulate SAA7220 +TDA1541A, digital attenuation low to -55DB, was -130DB. Bitwide low to 16bit , was 24 bit. While active this function, I are advice setting to OS2 or OS4 mode. But infact, this function can working with any setting mode.

Display :
         Active (1)  the display auto dark, the display will become dark in around 10 seconds after stop operate the buttons . Disable (0) the display auto dark, the display  light always.

Selector buttons:
          
While the display non blink (Don't push the "setting" button at first ), for select the input 1 to input 4.
          While the display blink (Push the "setting" button at first), for setting the digital  functions.

 

       
HDMI definitions : (Compatible with PS audio standard)

This product don't need the source MCLK signal but even the source has MLCK output but has not effect .

 

 

Firmware update introduce:
The unit has the update port on rear for update the FPGA firmware and USB interface firmware without open the unit.

            


UPDATE PORT 10 pins port :
       To connect the Altera Blaster and proceed with an FPGA firmware update from Windows, using the Altera programming software. These updates are meant for upgrading the functionality and/or sound quality .
FPGA firmware download and update guide: http://www.audio-gd.com/Firmwaredownload.htm
UPDATE PORT switch :
        For updating the built-in Amanero module's firmware through the USB input.
        Please note: If no plan to update the Amanero firmware, don't touch this switch when the product is power on .
Amanero firmware download and update guide: https://www.amanero.com/combo384_firmware.htm
Amanero firmware update guide : http://www.audio-gd.com/Pro/dac/Amanero/AmaneroEN.htm
        Please download the update tool and guide from Amanero's official web . In the official update guide, there is a step requiring that two pads be shorted more than 1 second on the Amanero module , in this product, users only need to push the red button for more than 1 second in order to perform the same step . Other update steps are the exact same as in the official guide.


 

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