VAC Signature Preamplifier Mk II - Manual (Page 5)

INPUTS (back panel)
There are five line inputs. Three pairs (L1, L2, L3) have RCA jacks to accommodate
unbalanced line level sources. The other two inputs (L4, L5) can accept either RCA
unbalanced or XLR balanced sources; by each of these sets of jacks is a toggle switch that
must be set to the correct mode.
Note: not all sources with XLR connectors are balanced. Many are unbalanced, with pin 2
or pin 3 tied to ground. The Signature Preamplifier accepts such sources, as well as true
balanced sources.
One pair of RCA jacks accommodate a home theater surround sound processor (left & right
front channels). When the CINEMA selection is made, the output from the processor is
routed directly to the power amplifier at a fixed gain. This allows volume levels to be under
the sole control of the processor, allowing easy integration of your high-end stereo system
into a home theater system. When no processor is connected, please keep shorting plugs
in these jacks.
One pair of RCA jacks accommodate the monitor return from a tape deck. If you do not
have a tape deck, these jacks can be used as an additional input.
Units without the optional phono section have two RCA jacks labeled “MC”. These act as
a line level input (L6), engaged when the SELECTOR is set to “PHONO”.
Units with phono have two sets of RCA jacks, labeled “MC” and “MM”, to accept phono
cartridges of low or high output. The switch should be set to “MM” or “MC” to match the
inputs used. The ground lead from the turntable should be connected to the binding post
located by these jacks.