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ally goes down as the
volume control setting
is reduced. The actual
improvements in this
McIntosh design
achieve a noise floor of
118 dB, refer to figure
99. The special control-
ling circuitry for this
dual volume control de-
sign is known as the
McIntosh "Dynamic
Control Multiplexer".
Fully Balanced
Circuitry
To compliment the level
of performance
achieved in one of
McIntosh's famous
Power Amplifiers with
Quad Balanced Cir-
cuitry, the C1000
Preamplifier also uti-
lizes fully balanced cir-
cuitry. This design to-
pology allows for the
virtual cancelation of
all forms of distortion,
both audible and mea-
surable, along with ex-
tremely low background
noise levels.
In the typi-
cal Preampli-
fier, one set of
circuits have
-95
to amplify the
positive and
-100
negative going
-105
parts of the
audio sound
-110
wave form. In
the C1000, the
-115
implementa-
tion of fully
-120
balanced cir-
-95
cuitry has the
positive going
48
Signal to Noise vs. Volume Level of the
C1000 Preamplifier versus High Performance
Mechanical and Electronic Volume Controls
-85
-75
-65
-55
-45
Volume Level (dB)
Figure 98
-35
-25
-15
-5
Figure 99
Mechanical
Electronic
C1000
5
15
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