|230,000yen(February, 1997 release)
The Integrated Amplifier which adopted UHC single push pull composition.
The UHC single push pull circuit using large current type magnification
element UHC-MOS is adopted.
Current supply capability has been improved a
bipolar transistor and more than equivalent, and since UHC-MOS also has the
sound quality merit of MOS-FET, it has solved the problem with which power of
expression and speaker drive power disagree.
The power transformer is
improving the flattery nature to the music signal which has a large dynamic
range to a magnetic saturation domain by using a large-sized magnetism circuit
with low magnetic flux density. Moreover, the leakage flux which is a noise
source in amplifier is sharply reduced by adoption of LC mount system.
Furthermore, the mutual intervention between each circuit is suppressed by
becoming independent about the winding wire of the power source of a voltage
magnification stage or a phone equalizer, and making the transformer of the
control circuit power source which controls a signal relay etc. become
In order to suppress sound quality degradation by the
mutual intervention between circuits, or inflow of a noise, 6 block structures
which separated the twin monophonic composition which achieved right-and-left
independence of the power amplifier block, and the circuit where signal levels
differ, and put cover into practice are adopted.
Moreover, in order to
suppress generating of the noise by vibration, the chassis is performing and
using black paint for the sheet steel with a thickness of 1.6mm of the same
grade as separate amplifier.
Furthermore, the laminated structure excellent in the oscillating damping
characteristic which combined a different material is adopted as a power
transformer attachment. And the high rigidity and vibration proof which
suppress vibration generated from a power transformer are secured.
The sintered alloy which changes vibration into heat and controls the propagation
to a chassis is used for an insulator. Furthermore, the new materials which
absorb vibration are stuck and propagation of vibration is suppressed.
in the speaker terminal, brass shaving appearance is carried
out, it plates with gold at a part, and the transmission loss is reduced.
Moreover, the bore diameter of a clamp part is made large-sized with phi6mm, and correspondence to a very-thick speaker cable is aimed at.
addition to the outstanding large current supply capacity, the large current
first recovery diode which has improved the loss of working speed and voltage
sharply is adopted as the rectifier circuit of a power-source part by parallel
Furthermore, the improvement of the characteristic is aimed at
with the combination of the film capacitor with which the mass high-quality
sound electrolytic condenser which uses low impedance electrode foil differs
from a frequency response.
Moreover, the wiring from a power transformer
output to a power amplifier output stage uses the OFC wiring material of a very
thick, and is suppressing energy loss to the minimum.
The first rank
circuit of discrete composition of having used low-noise FET is adopted as a
phone equalizer part.
Moreover, the improvement of sound quality is aimed at
by preparing the regulated power supply only for a phone equalizer.
large-sized shaving appearance of the 40 type 4-unit volume is begun and
carried out, and parts adopted in S1 series, such as the AC cord a gilding pin
jack, OFC internal wiring material, an inactive gas enclosure type relay, a
high-quality sound capacitor, and attachment-and-detachment type, are used.
|<Power amplifier part>
(Both ch(es) drive,
|100W+100W (8 ohms, 20Hz - 20kHz, THD 0.07%)
200W+200W (4 ohms, 1kHz, THD 0.7%)
||0.01% (Output-power-3dB o'clock, 8 ohms,
||Speaker AorB: 4ohms - 16ohms
At the time of bi-wiring: 4ohms - 16ohms
||Line: 150mV/47kohm (Source Direct off)
150mV/15kohm (Source Direct on)
Phono MM: 2.5mV/47kohm
|Equalizer amplifier output
||Phono MM: 20Hz-20kHz}0.3dB
|Signal to noise ratio (A network)
time of an input terminal short circuit
Phono MM: 91dB (at the time
of a 5mV input)
Phono MC: 78dB (at the time of a 0.5mV input)
||Bass: }8dB (100Hz)
Treble: }8dB (10kHz)
||switched: Two lines, a total of 120W
unswitched: One line, 240W
|Power supply voltage
|Dimensions (a base, a knob, a terminal
||Width 434x height 181x depth of 485mm