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R-8HE



(Regenerative power supply)


 

Built in 4 groups DA-7 V2 modules
Built in FPGA processor , reject the jitter
DSD , DXD support from USB / HDMI
32bit / 384K Asynchronous Transfer Amanero Combo 384 with USB isolator and separate PSU power supply

New design for remove the DSD tracks switch poping sound
Firmware update port assembles on rear, update without open the unit

  

  

 

   
Summarize Use Manual Specs Custom Option Shipping Cost

Shipped since July 2019, the unit has upgraded the transformers , can power on long term.


Please note:

        The product even had burn in over 300 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 .

About the remove DSD tracks switch poping sound:
       
In the older models if the users connect the external USB interfaces, while switch the DSD tracks, the DAC will output a switch poping sound .
        We test some external USB interfaces and find the issue is the different brand interface has different clock signal process mode, while switch the DSD track, one brand stop the clock signal output, one brand has the clock frequency ringing 4X times, cause the DAC follow the input clock signal switch the inside modes.
       We put the point to the SU1 and SU6 to process and almost remove the poping sound while switch the DSD tracks, the models have some lot uers and its clock ringing time is longest .  Then we test some other brands and found the DSD tracks switch poping sound have almost removed.


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, I 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 :
         
Push the "Setting" button one time, the one digit display will blink for active the function setting , push the right "Selector" button can change function . While the display blink, push "Setting" again , the right next one digit display will blink , push the left "Selector" button the left next one digit display will blink .

Left Selector buttons:
          
While the display not blink, for select the input sources.
           While the display blink, for the setting digit move to one left digital.

Right Selector buttons:
          
While the display not blink, for select the input sources.
           While the display blink, for set the digital process functions.


Menu functions:

Syn  (non function in the default installed Asy version firmware) :
          
For the Syn version if the HDMI input had noise, distortion or some samplings no sound, user can setting the 1st number digital ON (1) or OFF (0) to fixed the issue. In default is OFF (0) .

Pll  (Simulate SAA7220 +TDA1541A sound) :
          
Active (1) : Simulate SAA7220 +TDA1541A.While active this function, I are advice setting to OS2 or OS4 mode. But in fact, this function can working with any setting mode.


OS (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. We keep the display still has 1 to 3 because in future if we develop other NOS modes , user just want to update the FPGA firmware but don't want update the MCU chip.

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


 

Setting examples:

1,Set to most neutral sound mode (8x oversampling, non TDA mode):
          
Push the "SETTING" button two times, the 2nd digital blinking, then push the "Right INPUT"  set it to "0" , then push  the "SETTING" button one times, the 3rd digital blinking, push the "Right INPUT" set it to "0", then push  the "SETTING" button one times, ,the 4th digital blinking, push the "Right INPUT" set it to "8" .

2,Set to TDA1541 Simulate mode:
          
Push the "SETTING" button two times, the 2nd digital  blinking, then push the "Right INPUT"  set it to "1" , then push  the "SETTING" button one times, the 3rd digital blinking,  push the "Right INPUT" set it to "0" . Then push  the "SETTING" button one times, the 4th digital blinking,push the "Right INPUT" set it to "0" or "2" or "4" (the number lower sound is more warmer and smoother, we are recommend "2" or "4" in case ).

3,Set to NOS mode (New configure NOS mode with simulate TDA mode for the one of the most warm and smooth sounding):
          
Push the "SETTING" button two times, the 2nd digital  blinking, push the "Right INPUT" set it to "1" .  Then push  the "SETTING" button one times ,the 3rd digital blinking, Then push the "Right INPUT"  set it to "N" .

4,Set to NOS mode (Class mode without TDA mode simulate):
          
Push the "SETTING" button two times, the 2nd digital  blinking, push the "Right INPUT" set it to "0" .  Then push  the "SETTING" button one times ,the 3rd digital blinking, Then push the "Right INPUT"  set it to "0" .  Then push  the "SETTING" button one times ,the 4th digital blinking, Then push the "Right INPUT"  set it to "0" .

HDMI definitions : (Compatible with PS audio standard)
Pin 1 :       SDATA -                     
Pin 2 :       GND                         
Pin 3 :       SDATA +                    
Pin 4 :       SCLK +                       
Pin 5 :       GND                         
Pin 6 :       SCLK -
Pin 7 :       LRCK -                        
Pin 8 :       GND                         
Pin 9 :       LRCK +
Pin 10:      NC     
Pin 11:      GND                         
Pin 12:      NC
Pin 13:      NC                            
Pin 14:      NC                           
Pin 15:      NC
Pin 16:      NC                            
Pin 17:      GND                         
Pin 18:      NC
Pin 19:      NC


Update guide:

    
R7 update guide (The R-8HE upgrade method exact same as R7)



Upgrade Port :
        
The DAC can through an USB cable connect betIen computer and "Upgrade Port" to upgrade the firmware for improve the sound quality or performance .

        

 

 

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