Wisdom in mind,   enthusiasm at heart.

Home Products Warranty Shop Contact Us Shipment Chinese
 


R-7  (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.

Both USB / HDMI have built in separate isolator and pure class A isolate power supply.

The whole digital circuit built with 1 pc FPGA and 7 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.

Input signal sampling display.

Support external 10MHz clock input (Default is 50 ohm, 75 ohm can be custom order).

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 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, shut down the amp.
        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 .


Working normal state:
The Left 1st. display : Input channel flag , include 1,2,4,5,6 ( The detail please read below text ).
The Left 2nd. display : Internal or External clock selection. While connect the external clock, the dot of the bottom right corner has light and mean the clock connection had succeed ( The detail please read below text ).
The rest display : Input signal sampling , include 44.1,48.0,88.2,96.0,176,192,352,384 are mean the PCM sampling , and 064,128,256,512 are mean the DSD sampling.

        

Buttons' function:
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 .
         While the right 1st display blinking, push the "Setting" one time , the menu will change to menu page 2.

Left Selector buttons:
          
While the display non blink, for select the input sources.
          The 1st. of Left in the display show 1: AES/EBU digital input.
          The 1st. of Left in the display show 2: RCA coaxial digital input.
          The 1st. of Left in the display show 4: Optical digital input.
          The 1st. of Left in the display show 5: HDMI-IIS digital input.
          The 1st. of Left in the display show 6: USB digital input.
          (IN3 is the 50 ohm external clock input, setting through the below introduce )
          The external clock input impedance must be 50 ohm, and must match with same impedance external clock generator and cable.

          While the display blink, for the setting digit move one left.

Right Selector buttons:
          
While the display non blink, for select the input sources.
           While the display blinking, for setting the digital process functions.


Setting state:




Menu Page 1:
The Left 1st. display : OS (Oversampling)
         O (OS) : For select oversampling.
         n (NOS) : For select NOS mode.

The Left 2nd. display : Mode ( OS and NOS modes)
        
 While OS setting on "O" mean the DAC working under oversampling mode, loIr number OS modes sound became warmer and smoother. Or depend on your sense .
         0 : class technology NOS mode.
         2 : 2X oversampling.
         4 : 4X oversampling .
         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 it has 1 to 3 because in future if we update more NOS mode, users don't want replace the MCU.

The Left 3rd. display : Simulate SAA7220 +TDA1541A sound)
          
t (TDA) : Active 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.
           r (R-2R) : Disable simulate SAA7220 +TDA1541A .

The Left 4th. display : Internal or External clock selection)
           I (Internal) : Select the internal clocks.
          E (External) : Select the external clock.
         The selection only available while the clock connection had succeed, otherwise the display show "Fail" if select the external clock .

The Left 5th. display : reserved

Menu Page 2:
The Left 1st. display : Display auto dark setting
         A (Auto) : Active  the display auto dark, the display will become dark in around 10 seconds after stop operate any buttons ,only leave a little LED light for figure the unit power on. While user operate the buttons , the display light auto .
         n (Non auto) :Disable 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 1 times, the 1st. digital of the 1st menu blinking, then push the "Right INPUT"  set it to "O" .
           Then push  the "SETTING" button 1 times, ,the 2nd. digital blinking, push the "Right INPUT" set it to "8".
           Then push  the "SETTING" button 1 times,the 3rd. digital blinking, push the "Right INPUT" set it to "r".
         
2,Set to TDA1541 Simulate mode:
          
Push the "SETTING" button 1 times, the 1st. digital of the 1st menu blinking, then push the "Right INPUT"  set it to "O" .
           Then push  the "SETTING" button one times, ,the 2nd digital blinking, push the "Right INPUT" set it to "0" or "2" or "4" (the number lower sound is more warmer and smoother).
           Then push  the "SETTING" button 1 times, the 3rd. digital blinking, push the "Right INPUT" set it to "t" .
        
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 1 times, the 1st digital of the 1st menu blinking, then push the "Right INPUT"  set it to "n" .
           Then push  the "SETTING" button 2 times ,the 3rd digital blinking, push the "Right INPUT" set it to "t" .

        


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:

           


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.
 

备案序号:粤ICP备05020367号

版权所有:          何庆华  睿志音响

Copyright(C) 2004   www.audio-gd.com    All Rights Reserved