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User’s Guide ADI-2/4 Pro SE – v 1.0
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12. I/O
The I/O menu has all the settings for the analog stereo I/Os
Analog Input , Line Output 1/2, Phones
Output 1/2 and Phones Out 3/4 . The submenu Parametric EQ mirrors the settings done in the
graphical EQ screen. The submenus Bass/Treble and Loudness as well as some phase functions
are only found on the two analog stereo outputs.
12.1 Analog Input
12.1.1 Settings
Subpage Settings has the following entries:
Ref Level
Sets the reference level for the analog inputs 1/2. Choices
are +1 dBu, +7 dBu, +13 dBu, +19 dBu, +24 dBu, referenced
to digital full scale level (0 dBFS).
Auto Ref Level
ON or OFF. Default: OFF. In case of overload Auto Ref Level
will switch the Ref Level to the next higher setting. This pro-
cess is repeated until +24 dBu is reached. In case Trim Gain
was active it will be set to 0 dB first. Not available in RIAA
mode.
Trim Gain Left, Trim Gain Right
Digital amplification of the input signal between 0 and +6 dB, in steps of 0.5 dB. Main use is to
fine-tune the input sensitivity so that it matches the reference output level of external gear.
Phase Invert
Available settings are Off, Both, Left and Right. Inverts the phase (180°) on the corresponding
channel.
M/S-Proc
Activates M/S processing. Monaural content is sent to the left, stereo to the right channel.
AD Filter
Short Delay Sharp, Short Delay Slow, Sharp, Slow. The analog to digital conversion can be done
using four different filters. Default is
SD Sharp , offering the widest and most linear frequency
response at lowest latency. SD Slow causes a small drop in the higher frequency range, but offers
a less aggressive (less steep) filter. Sharp and Slow are phase linear filters. See chapters 34.11
/ 34.14 for more details. Note: At sample rates of 705.6 kHz and higher DA Filter selection is no
longer available. The ADC then uses a phase linear Slow filter.
Dual EQ
OFF or ON. Default: OFF. When set to ON, the 5-band parametric equalizer can be set individu-
ally for left and right channel.
AD Conversion
PCM or DSD. Default: PCM. DSD will not become active at sample rates below 176.4 kHz. The
DSD rate changes with the chosen sample rate (
SETUP - Options - Clock ).
RIAA Mode
OFF, +14 dB, +20 dB, +26 dB, +32 dB, +38 dB. Default: Off. Activates an RIAA preamplifier and
equalizer with selectable gain for turntables with moving magnet cartridge (MM).
RIAA Mono Bass
OFF, Mono. Default: Off. Mono sums the bass below 150 Hz.