|220,000 yen(July, 1989 release)
The stereo preamplifier which concentrated the development technical
capabilities accumulated over the element and many years which were selected
carefully, and was developed.
The balance input-and-output circuit is
The dregs cord difference input and Class A push pull output
stage are adopted as the high level flat amplifier handling signals other than
an analog disc, and many characteristics are elaborated in it.
XLR type balance connector is carried in this amplifier portion at input and
output, and ideal balance transmission is possible.
is equipped with the input circuit for exclusive use in accordance with the
cartridge of MC type and each MM model.
At the time of MM input, the FET
Para input circuit which can maintain high input impedance over all the
frequency bands is adopted in consideration of the Output voltage/Output load
impedance of MM cartridge being high.
Moreover, since signal voltage is low,
it thinks that a S/N improvement is important at the time of MC input, and it
constitutes the input circuit from a small element of peculiar noise selected
These changes are performed by the relay and the change of the amplification degree which suited MM/MC simultaneously with it is also
Since a straight signal course is constituted at the
shortest, a relay is installed in a signal course required for a change, and it
is changing by the logic relay control system which controls a relay
At this time, consideration is carried out also to the quality of the important
relay, and the encapsulated type relay developed especially as an object
for audios is adopted. A contact is a crossbar twin system and has acquired
low contact resistance and high durability.
Input sauce and volume control can be performed now with attached remote
In this case, in order to prevent sound quality degradation
occurring, the input change considered it as the system which changes a relay
electronically, and volume control has also adopted the system which sound
quality degradation makes rotate little manual volume by a motor.
tone control for which the added type filter which was excellent in the
characteristic was applied to tone control is developed and carried.
passes straight, and if needed, an original flat signal is another, and makes
the characteristic, and the principle of this tone control serves as a system
adjusted from a flat signal, and is advantageous in sound quality.
in order to think sound quality as important, it is used combining a quality
element, and also an ON-OFF switch is formed, and a circuit is passed at the
time of OFF.
The loudness Compensation is carried in order to rectify
thinking that the quantity of low-pitched sound decreased at the time of small
volume by man's hearing characteristic.
The characteristic is being
interlocked with volume control volume and controls the amount of reinforcement
It is also possible to carry the recording selector and
to record another sauce during viewing and listening.
||1.0Hz-400kHz+0 -3.0 dB
||1.0Hz-500kHz+0 -3.0 dB
||0.005% (with all the input terminals)
|Input sensitivity (rating / 0.5V
AD MC: 0.13mV/0.032 mV/100 ohms
|An Output power/impedance
||Balanced Output: 2.0V/50 ohm (25ohm/25ohm), a XLR connector
Unbalanced Output: 2.0V/1 ohm, a RCA phono jack
Rec: 126mV/200 ohm, a RCA phono jack (at the time of AD input)
||Conformity impedance: 4ohms - 100ohms
|S/N ratio (at the time of a rated input S/N
|Input conversion noise
a distortion, 20Hz - 20kHz)
|Balanced Output: 8.0V, a XLR type connector
Unbalanced Output: 8.0V, a RCA phono jack
Tape Rec: 8.5V, a RCA phono
jack (at the time of AD input)
|The AD maximum inlet pressure (1kHz, 0.005%
|Minimum load impedance
||Balanced Output: 600ohms
Tape Rec: 10kohm
||Bass: 300Hz, ±10dB (50Hz)
|AD MM Input
|AD MC Input
|Loudness Compensation (Volume-30dB)
||17Hz, -12 dB/oct
|The semiconductor used
||Transistor: 37 pieces
FET: 16 pieces
IC: 33 pieces
Diode: 59 pieces
||the width 445x height 95(piece -- it
includeds) x depth of 325mm
|Attachment: Remote commander RC-3
|Remote control system
||Infrared pulse system
||SUM-3(IEC name R6) 2 piece
|The maximum Dimensions
||Width 64x height 149x depth of 18mm
||140g (Battery includeded)