The "S1 Series" that appeared in 1993 was a reference-class audio series designed to please the most discerning of all audiophiles.
The primary objective of the S1 Series was to reproduce "reality"---- a deeper, more natural sound.
Continuing the same quest for high-quality sound reproduction that the S1 Series had been pursuing, the PMA-SA1 combines the latest audio
technologies with the reliability that DENON's amplifiers have earned over the past 10 years. From the external design to the details on the inside,
the PMA-SA1 has been developed as a member of the new SA Series embodying the essence of DENON's advanced audio technologies.
With new advances in audio formats and the ability now of many households to enjoy multi-channel sound in their own home theatres,
"authentic sound" is in even greater demand. The SA Series represents DENON's latest offering of possibilities in pure 2-channel audio
for today's most dedicated music lovers.
Balancing dynamic power and delicate details in sound,
the fruit of many years of DENON audio technology and experience.
PMA-SA1
INTEGRATED AMPLIFIER
04
UHC-MOS, the ideal
large-current amplifier
The ideal amplifier uses a minimum number of
amplifier elements to control output current. Obtaining
large output from simple circuitry, however, requires
elements capable of handling incredibly large
current. Since its development of the POA-S1,
DENON has been employing the UHC-MOS
large-current amplifier element in its amplifiers.
DENON's UHC-MOS uses single push-pull tech-
nology to configure the ideal circuit for a large-output
amplifier. The UHC-MOS has a gain that is even
higher than that of bipolar transistors; with a single
element, the UHC-MOS achieves the current linearity
of 35 MOS-FETs and 3 bipolars. The UHC-MOS
incorporates the capability of MOS-FETs to reproduce
the delicate nuances of music and thus masterfully
reproduces the full sonic range, from the sound
of a violin solo that gradually tapers off into the
acoustics of the hall, to the dramatic climax of
a full orchestra that causes heaven and earth
to tremble.
Cascode Bootstrap Connection,
to bring out the maximum potential
of UHC-MOS
This UHC-MOS that boasts large current and
superior linearity on its own suffers from low
withstand voltage and large junction capacity.
Solving these shortcomings is the Cascode
Bootstrap Connection, a technology that ensures
Main Features
stable operation and brings out the UHC-MOS's
outstanding conversion characteristics. The cas-
code bootstrap circuitry maintains voltage to the
UHC-MOS at a constant level and solves the size
of junction capacity. In addition, it vastly improves
temperature stability to successfully stabilise and
bring out the superior acoustic characteristics of
the UHC-MOS.
+
_
(
MM)
CD-1
BALANCED
SPEAKER
OUT(L)
CD-2
TUNER
DVD/AUX
TAPE-1/CD-R
TAPE-2/MD
TAPE-1/CD-R REC
TAPE-2/MD REC
PHONO EQ.
AMP
BALANCE
CONTROL
(RIGHT CHANNEL)
INPUT
SELECTOR
REC OUT
SELECTOR
POWER
TRANSFORMER
AC PLUG
+B
-
B
-
Muting
protector
+B
+
-
B
+B
-
B
+B
-
B
SOURCE
EQUALIZER POWER
MAIN
VOLUME
Voltage
amplification
stage
Bias circuit
Bias circuit
power supply
+B
-
B
power supply
FUSE
switch
CONTROL
PRE-AMPLIFIER
POWER
AMPLIFIER
Cascode stage
Cascode stage
Cascode stage
Power
Regulated
Regulated
PHONO
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