9
SERIAL
NUMBER
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MC 4 51 DU AL MO N O PO W ER A M PLI FIE R
McINTOSH LABORATORY, INC., BINGHAMTON, NY
HANDCRAFTED IN USA WITH US AND IMPORTED PARTS
+++
-
8Ω 4Ω 2Ω COM
-
COM
++
4Ω 8Ω
+
2Ω
SOLID STATE (300W) OUTPUTS
CLASS 2 WIRING
VACUUM TUBE (150W) OUTPUTS
CLASS 2 WIRING
POWER
CONTROL
OUT
IN
AUTO OFF
ENABLED
DISABLED
CROSSOVER
(MONO MODE)
VACUUM TUBE
INPUT
INPUT MODE
BALANCED
UNBALANCEDBAL
UNBAL
MONO SOLID STATE/
INPUT
AMPLIFIER MODE
MONO
SEPARATEBAL
UNBAL
300
250 400
550
180
130 800
1k100
CROSSOVER POINT
Hz
+1.2
-3
+3-6
0
VACUUM TUBE LEVEL
dB
Rear Panel Connections and Switches