6
INPUT MODE
BALANCED
UNBALANCED
SERIAL
NUMBER
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION:
RISQUE DE CHOC ELECTRIQUE-NE PAS
OUVRIR
120V 50/60Hz
12 AMPS
CIRCUIT
BREAKER
INPUT MODE Switch
Used to select
BALANCED or
UNBALANCED inputs
AC POWER
Use supplied AC Power Cord
to connect to a live AC outlet
after other connections have
been made
VACUUM TUBE (300W) OUTPUTS
Terminals for connecting Speaker Wire
from a Loudspeaker to the Vacuum Tube
Amplifier. Positive (+) and Negative
(-) terminals for 2, 4 and 8 Ohm
connections
SOLID STATE (600W) OUTPUTS
Terminals for connecting Speaker
Wire from a Loudspeaker to the
Solid State Amplifier. Positive (+)
and Negative (-) terminals for 2, 4
and 8 Ohm connections
VACUUM TUBE INPUT
SELECT Switch
Used to select DIRECT
or COMPOSITE input
for the Vacuum Tube
Amplifier
SOLID STATE INPUT
SELECT Switch
Used to select DIRECT
or COMPOSITE input for
the Solid State Amplifier
VACUUM TUBE DIRECT INPUT
BAL (Balanced) or UNBAL (Unbalanced)
SOLID STATE DIRECT INPUT
UNBAL (Unbalanced) or BAL (Balanced)
COMPOSITE INPUT
BAL (Balanced) or UNBAL (Unbalanced)
POWER CONTROL
IN and OUT for On/Off
signals to (OUT) and
from (IN) other McIntosh
Components
AUTO OFF
When ENABLE is selected,
the MC901 will power off
after 30 continuous minutes
of receiving no signal.
DISABLE will defeat this
feature
Rear Connections and Switches
Figure 04– Rear View
