Page 1
What Legends are made of..... Well never forget the impact the introduction of the
Marantz Model 7 and Model 9 had on the industry more
than 40 years ago. These models fused original circuit design with
rational thinking and aesthetic appeal. Not only did these models help
establish the Marantz name and brand in the audio world, but also
influenced the direction that audio evolution has taken ever since.
Today, the Model 7 and Model 9 remain an industry standard
and have secured a place in the analog era. They continue to be the
audio components of choice by many people. Their rebirth is not for
nostalgias sake, but pride and pleasure. The Model 7 and Model 9
live again, a celebration to their essence.
That the Model 7 and Model 9 are still sought-after-components
is a testament to the fact that even though musical sources may have
changed, thoughtful design and engineering continue to endure,
defying the laws of music and audio history. Reviving these two
numbers will once again enrich audio history.
The distinctive voices of the Model 7 and the Model 9 have been
reborn in the SC-7S1 and MA-9S1. Each draws out the musical
potential of, for example, Super Audio CD and has therefore the
capability to superbly reproduce musical formats of the future.
Improvements while maintaining original integrity include:
- Enhancement of channel separation in the high frequency range
- Significant reduction of cross talk
- Low impedance drive capability
- High-speed signal handling capability
- High instantaneous current delivery capability
- Highest reproduction capability for super wide range & dynamic
range audio.
Even in this technological era you will understand why weve
assigned the numbers 7 and 9 to the nameplate of these products.
You will recognize their distinct voice when you listen to them.
Monaural
Power
Amplifier
MA-9S1 Instantaneous current
delivery capability
Even if amplifiers have the same
power specifications, their performance
may not be the same due to a
difference in current delivery capability.
The delivery capability of a power
amplifier depends on how instantaneous
the current supply is. Thats why
the power supply for the MA-9S1 was
completely revamped to give it a truly
instantaneous current supply capability
that has been increased three times as
much compared to any Marantz
product designed before. Fully balanced monaural power amp
To minimize the influence of strong
return current occurring from the
loudspeaker system, the circuit for the
power amp consists of two amplifiers
giving a voltage gain amp of 23dB,
in a 3 paralleled push-pull balanced
construction, for the final buffer amp
of 6dB.
Choke input system
The power supply of the voltage gain
amplifiers adopted choke input system
has few ripples and is durable with load
changes. This can prevent noise from
the amplifier as well as reduce noise
from the primary winding, resulting in
a clean power supply.
Ultra low impedance amplifier
The buffer amplifiers power supply
block, which supports the high current
delivery capability, uses a capacitance
input system to realize very low
impedance. The Super Ring power
transformer, the low impedance
electrolytic capacitors, the very large
gauge internal wiring, and the thick
pattern PCB all contribute in supplying
the required power.
What Legends are made of..... Well never forget the impact the introduction of the
Marantz Model 7 and Model 9 had on the industry more
than 40 years ago. These models fused original circuit design with
rational thinking and aesthetic appeal. Not only did these models help
establish the Marantz name and brand in the audio world, but also
influenced the direction that audio evolution has taken ever since.
Today, the Model 7 and Model 9 remain an industry standard
and have secured a place in the analog era. They continue to be the
audio components of choice by many people. Their rebirth is not for
nostalgias sake, but pride and pleasure. The Model 7 and Model 9
live again, a celebration to their essence.
That the Model 7 and Model 9 are still sought-after-components
is a testament to the fact that even though musical sources may have
changed, thoughtful design and engineering continue to endure,
defying the laws of music and audio history. Reviving these two
numbers will once again enrich audio history.
The distinctive voices of the Model 7 and the Model 9 have been
reborn in the SC-7S1 and MA-9S1. Each draws out the musical
potential of, for example, Super Audio CD and has therefore the
capability to superbly reproduce musical formats of the future.
Improvements while maintaining original integrity include:
- Enhancement of channel separation in the high frequency range
- Significant reduction of cross talk
- Low impedance drive capability
- High-speed signal handling capability
- High instantaneous current delivery capability
- Highest reproduction capability for super wide range & dynamic
range audio.
Even in this technological era you will understand why weve
assigned the numbers 7 and 9 to the nameplate of these products.
You will recognize their distinct voice when you listen to them.
Page 2
Stereo
Control
Amplifier SC-7S1 The concept: channel separation for
super wide range & dynamic audio
We think its of the utmost importance
to extend high frequency response as
well as channel separation so you can
hear the true meaning of Super Audio.
This is why we have designed the input
and output circuitry, volume control
section, and power supply circuits
according to this philosophy.
The result: an astonishing channel
separation of over 100dB at 20kHz.
Floating control bus system
We make it possible to synchronously
drive two or more control amps by
using a floating control bus system
connected to as many as 6 sets of
control amplifiers. We also enable you
to trim levels using the remote control,
making it easy to set up the optimal
sound field on a multi-channel
configuration. The highest achievable
stereo performance can be accomplished
when a system configured with two sets
of SC-7S1 and four sets of MA-9S1 are
connected in a bi-amped mode.
You will experience superb sound with
unbelievable channel separation.Fully balanced control amp with an
8-gang linear volume control
The SC-7S1 is a full balanced,
two-channel control amp providing
the channel separation you need for
Super Audio. Based on our own high
quality four-gang active volume control
we have developed an even better
eight-gang linear control volume that
reduces gang errors from 0 to 100dB,
±0.5dB. By adding an additional
HDAM SA* (High Definition
Amplifier Module), we improved the
Common Mode Reject Ratio (CMRR)
dramatically, attaining an incredible
ultra-wide frequency band of 150kHz
and succeeded in producing the perfect
control amplifier for Super Audio CD.
Choke input system
In the power supply section, the choke
input topology was adopted to
drastically reduce rectifier harmonic
noise. This system is especially suitable
for a control amplifier in which very
small signal amplification occurs.
*HDAM SA
The feedback impedance of the Current
Feedback circuit was reduced to its minimum
to make it faster. We developed a new High
Definition Amplifier Modules (HDAM), a
separated module operating as a buffer for the
amplifier. The SC-7S1 has four HDAMs on
each input-output buffer and another four
units on the V/I converter.
