Control amplifier developed aiming at Low-TIM-izing.
Equalizer stage which takes charge of a build-out of recording
characteristics while amplifying the weak output from a record,The cascode
differential circuit according the first rank to low-noise FET -> it is good
DC stream-composition equalizer stage of a transient in Darlington-connection
SEPP and a low distortion about the 2nd step as phase inversion amplifier at a
perfect push pull stream-composition amplifying circuit and an output stage.
Furthermore, it has a low-noise property in FET of the first rank, and the
extravagant thing of the Marantz requests for price quotations which arranged
the good pair property also thermally and electrically is used for it. As a
result, an S/N ratio is having selected carefully what has a precision good a
property also for 90dB (IHF-A), in addition an equalizer element and high in the
time of a 7.75mV input, and the RIAA deflection showing the accuracy of a record
play has acquired the value of ±0.2dB (20Hz - 20kHz).
MC head amplifier
is built in and, moreover, it is DC stream composition which uses low-noise FET
for the first rank. Furthermore, the impedance of a feedback circuit is pressed
down very low and the modification of the S/N ratio is aimed at.
To the deck of a Phono input and B, another source can completely be recorded
independently from an AUX termination to each two decks at the deck of
A, listening to FM music. By this, it also made the troublesomeness by
the pin plug interconnection in the case of mutual dubbing to the deck
from the deck cancel, and it not only expanded the deck play far, but improved
the operationality at the time of a play.
In SC-7, in order to plan an impedance matching between a cartridge and amplifier, the impedance selector is carried.
In man-month type, it can adjust in five steps of 1kohm - 100kohm, and can adjust in MC type in four steps (10 ohms - 220 ohms).
In any sound fields, it has the try tone control which can always
perform the room equalization of adoption. The good BAX type of a control
property is used for tone amplifier with a stream composition called FET using
DC differential-amplifier -> perfect push pull amplification ->SEPP. And
in addition to BASS TREBLE, it has the MID control which can also perform an
inside compass correction, and, moreover, 2kHz - 10 kHz and Low are switched for
High to 500Hz - 100 Hz in a turnover frequency by a TURN-OVER switchpoint.
Moreover, it has functionalities variegated from a room acoustic to a
special-NetWare-program correction -- a tone correction can be added -- in the
source under sound recording by the interlock with a TAPE-EQ switchpoint.
it is possible for even a switchpoint to come out, and for a phone
signal not to pass along a tone circuitry, but to send to PRE-OUT direct with a
tone it1 switchpoint.
The gold finish input/output terminal which
prevents little volume control / tone-quality failure of a noise by the
headphone amplifier / 4-unit type volume adoption of high-sensitivity first
class 0.5W design is substantial.
||Stereo control amplifier
|An Output power/impedance
||PRE-OUT: 1.5V/100 ohm
||Phono1and2 (man month) :2mV/1kohm,
10kohm, 27kohm, 47kohm, 100kohm
47ohm, 100ohm, 220ohm
High SFT Level: 150mV/40kohm
||0.004% or less
|Cross modulation distortion
||0.004% or less
||±0.2dB (RIAA deflection, 20Hz - 20kHz)
0, -0.1dB (High SFT Level, 20Hz - 20kHz)
4Hz - 120kHz (High SFT Level, +0,
|Input equalization noise
||0.24 microvolt (Phono IHF-A)
|The Phono maximum input
||±10dB (low-pass 100Hz)
±6dB (mid range
±10dB (high region 10kHz)
||Width 416x height 146x depth of 244mm
||Cabinet WC-75(walnut finish):7,000yen