The A Stereo Input is via standard female 1/4” Jack connectors. It is electronically
balanced and it is factory-preset for a 0 dB level (LINE sources).
The B Stereo Input is via standard Jack 1/4” connectors. It is set for signals
providing a signal LINE level if not otherwise notified. Via jumper selection (ref to
Section 13.4), an RIAA equalized amplifier can be also fitted so that a record-
player can be connected directly to the input. Start/Stop control can be also
provided via the 9 pins remote interface (available on request).
When set for LINE signals, the input B is electronically balanced.
When the RIAA option is used with the stereo channel, the turntable connections
should be made via Mono (unbalanced) Jacks – as in the Connections chapter.
Only one of the two inputs (Input A or Input B) will be active at any time,
depending upon the setting of the B SEL switch (see)
The B SEL switch selects the INPUT B (Line) socket when depressed and the
INPUT A (Mic) when released. A LED glows red when the INPUT B is selected.
The GAIN potentiometer provides a variable 30dB range from +15 to +15dB gain
to match the connected source to the internal 0 dBu operating level
This knob allows you to match the input level to suit a wide variety of professional
and semiprofessional sources. Start with a low setting, especially for professional
equipment, checking the level on the meters using PFL, and increase it if you
cannot reach an adequate signal level with the fader at maximum (refer also to
par. 11.2).