Audio-GD R-7 User manual
Audio-GD R-7
Balanced R2R DAC FPGA 2x TCXO I2S HDMI
Amanero 32bit 384kHz DSD512
USER MANUAL
AUDIO-GD R-7 Balanced R2R DAC FPGA 2x TCXO I2S HDMI Amanero 32bit 384kHz DSD512
I. NOTES
The product has already been burn-in in our workshops for more than 300 hours. On receipt
and to finish burn-in the device, simply turn it on and start your music. The burn-in process
also works with a minimum volume.
The product includes amplifiers and power supplies in pure Class A that produce heat. We
do not recommend stacking other devices or objects directly above the product. It is
necessary to leave a free space of at least 3cm above the unit. Similarly, we strongly advise
against placing this product on another device that also releases heat.
It is strongly recommended to turn off the device before connecting new sources or outputs.
After turning off the unit, please wait at least 30 seconds before turning it on again.
II. UPDATES
In order to simply perform updates of the device when they are available, simply connect the
device to your computer via the Micro USB port on the back panel.
III. INPUT SELECTION
To select a source, simply use the Selector buttons on the left and right.
IV. MODES & FILTERS
The device offers several modes of use in order to adapt to everyone's needs. These can be
selected via the buttons on the front panel.
Note: It is strongly recommended to decrease the volume of your amplifier and stop playback
when changing modes.
To access the mode selection, simply press the Settings button. The digits on the display
then start flashing and you can make your changes. To exit the configuration menu, simply
do not press any button for 5 seconds.
●Menu : Page 1
OS (Oversampling) :
“O” to select Oversampling mode
“N” to select NOS mode (Non-Oversampling)
Modes (OS and NOS) :
AUDIO-GD R-7 Balanced R2R DAC FPGA 2x TCXO I2S HDMI Amanero 32bit 384kHz DSD512
When the OS parameter displays "O" then the DAC operates in Oversampling mode. The
lower the number of OS modes, the more "warm" and "soft" the sound will be.
Mode “0” : NOS Mode
Mode “2” : 2x Oversampling
Mode “4” : 4x Oversampling
Mode “8” : 8x Oversampling
When the OS parameter displays "N" then the DAC operates in NOS mode. The different
modes offer different sound renditions. The most commonly used mode is mode 3.
Mode 1 : Simplest data processing
Mode 2 : FIFO data
Mode 3 : Fastest data processing
Dith (Dither) :
1 = Activated
2 = Desactivated
Pll (PLL) :
For USB and HDMI inputs we recommend to enable the PLL setting when using a low quality
source and to disable it when using a high performance source.
1 = Activated
2 = Desactivated
Di (Display) :
When the display parameter is activated then the screen automatically turns off after 10
seconds. When this parameter is deactivated, the display remains constantly on.
1 = Activated
2 = Desactivated
●Menu : Page 2
First number (HDMI synchronizer) :
If you hear noise, distortion or other problems using the HDMI input, you can enable this
option. By default, this is disabled.
1 = Activated
2 = Desactivated
Second number (USB synchonizer) :
If the USB interface module is changed, this parameter must be activated. By default, this is
disabled.
1 = Activated
2 = Desactivated
V. HDMI PINOUT
AUDIO-GD R-7 Balanced R2R DAC FPGA 2x TCXO I2S HDMI Amanero 32bit 384kHz DSD512
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
MCLK +
Pin 11
GND
Pin 12
MCLK -
Pin 13
NC
Pin 14
NC
Pin 15
NC
Pin 16
NC
Pin 17
GND
Pin 18
NC
Pin 19
NC
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