16
OPERATING – INPUT/OUTPUT SECTION
INPUT GAIN
This knob controls the input level for both the
analog and digital input options. For optimal
performance of the M350, a well-adjusted input
level is essential.
Analog Input Range
Counter Clockwise : -10dB
Center
: 0dB
Clockwise
: +14dB
Digital Input Range
Counter Clockwise : -18dB
Center
: 0dB
Clockwise
: +6dB
1/L – 2/R INPUT LEDs
These LEDs signal using three colors.
Green
: Indicates that you are “well on the
safe side”
Yellow
: Reaching optimal performance.
Red
: Should only occasionally blink at
absolute peaks in the material you
are feeding the M350 with.
The INPUT knob adjusts the level for both left
and right input channels. If there is a significant
difference between the input of the left and right
channels, you should adjust the output of the
device feeding the M350.
DIG. IN
The M350 has both analog and digital input
options. The digital input is the S/PDIF type
connected via RCA phono cables.
To select/deselect the digital input, press the
DIG IN button once.
The green LED next to the DIG IN button will
indicate various states.
LED Off
Digital input is set to “off”. The M350 processes
only the signal present on the analog inputs.
This is done at an internal sample rate of
44.1kHz.
LED Green
The M350 is locked correctly to the signal on
the digital input. With the digital signal a clock is
supplied. The M350 can lock to either a 44.1 or
a 48kHz sample rate frequency,, which are the
most commonly used sample rate frequencies.
E.g. a regular CD is 44.1kHz.
Flashing LED
If digital in is selected but no digital signal is
received, or if the signal is corrupt, the M350
automatically returns to internal clock and
analog operation. However, the M350 will
continue to look for a digital signal on the
S/PDIF input. This is indicated by the flashing
LED. If you wish to stay in analog mode, press
DIG IN once and the LED will stop flashing.
Dual Input mode – LED
When this LED is lit (green) it indicates that the
Dual Input routing mode has been selected via
the switch located on the rear panel.
Read more about the Dual Input mode on page
23.
