Function introduce :
The DAC can setting the digital
process functions on front plate to change the sound flavors, without open the unit .
Before push the
we are advice user turn low the amp volume, stop the
music track playing .
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.
"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):
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.
(1) or Disable (0) dither for all inputs.
SAA7220 +TDA1541A sound) :
(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.
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
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.
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 .
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:
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
Amanero firmware download and update guide: https://www.amanero.com/combo384_firmware.htm
Amanero firmware update guide :
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.