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Setup and Installation
connections and cables The Nº380 incorporates both RCA-type and XLR-type connectors for audio signal
input and output.
The Madrigal-designed RCA-type connectors used for single-ended audio intercon-
nection are a great improvement over ordinary RCA-type connectors, offering supe-
rior contact integrity and mechanical locking when used in conjunction with the
Madrigal cable-mounted RCAs. The gold-plated XLR-type connectors used for bal-
anced connections are made to professional application standards.
When connecting the Nº380 to source equipment and power amplifiers, we rec-
ommend Madrigal Audio Laboratories CZ Gel Interconnect Cable. CZ Gel is avail-
able in various lengths, in purpose-designed balanced and single-ended configu-
rations. See your Mark Levinson dealer for more information.
Connect the AC cord to the male IEC connector on the center of the bottom
panel of the Nº380, then connect the AC cord to the AC mains.
To Nº380 To AC mains
1
3
2
1
2
3
1 = Line (hot)
2 = Neutral
3 = Earth ground
When power is first applied to the Nº380, the preamp will run through an auto-
matic initialization sequence which (among other things) provides a “role-call” of
the current input names (see “Names” on the next page), selects the first name
other than NOT USED or ssp, and sets the volume to OFF.
For optimal sonic performance and longevity, the Nº380 is designed to remain
powered at all times (the standby switch merely mutes the preamplifier’s outputs
and turns off the display). There is an initial break-in period of approximately
300 hours before the Nº380 achieves optimum performance.
Note: If AC mains power to the Nº380 is interrupted, the main output
will be muted. When power is restored, the initialization
sequence described above will restore the preamplifier to
normal operation, with the main output muted and the
display indicating OFF.
We recommend you allow the circuitry within your various system components
to stabilize for 1 to 2 minutes before use after such a power outage.