|100,000yen(January, 2000 release)
The Integrated Amplifier which aimed at correspondence to a next-generation
audio by improving PMA-2000II.
UHC-MOS which is a large current type
magnification element is adopted as an output stage, and the UHC single push
pull circuit has realized coexistence of delicate power of expression and high
Each of the volume circuit, the tone circuit, and the power
amplifier circuit was improved, and the maximum of the frequency response at the
time of real use is improved to 100kHz. Furthermore, the noise generated within
amplifier at the time of real use was stopped by improving a volume circuit, and
the resolving power corresponding to a next-generation audio has been obtained.
a magnetic circuit and the twin transformer parallel connection which
improves the characteristic of each winding wire circuit are adopted. Moreover,
the leakage flux of the power transformer which is a noise source in amplifier
is reduced by making influence of magnetic etc. into the L.C. (Leakage
Cancelling) mount system canceled mutually.
Furthermore, the floating effect
was further heightened by adopting a new gum elastic as the floating structure
which combined special rubber, special resin, and the sheet steel, and the bad
influence by vibration of a transformer is prevented.
barrier diode developed for high frequency rectification is carried in the
power-source part. Little play of the noise is enabled by the low-noise
characteristic and the large current characteristic by high-speed operation.
Furthermore, it is considered as the circuit which can supply a power source
with a margin in all the zones of play frequency by carrying dynamic resistance
combining the power transformer reduced sharply and the capacitor by which a
mass electrolytic condenser differs from frequency.
In order to reduce
inflow of noise current, such as a constant current circuit, to the grand
circuit used as the origin/datum of signal magnification, the Precision Signal
Ground circuit is carried.
Precision Mechanical Ground structure is
adopted and other decreases of oscillating, such as a power transformer, and
interference of the oscillating course are suppressed by carrying out direct
attachment of the radiator dumped by the gum elastic and the radiator stabilizer
at the nearness of FOOT.
Furthermore, measures against vibrationproofing,
such as a volume knob which suppresses vibration with top covering which took
the measures against vibrationproofing, or high mass, are taken.
order to suppress sound quality degradation by the mutual intervention between
circuits, or inflow of a noise, the power amplifier block was considered as the
twin monophonic composition made to become independent by right and left, and
also the circuit where signal levels differ was also separated, and 6 block
structures which put cover into practice are adopted.
in the speaker
terminal, brass shaving appearance is carried out, it plates with gold at a
part, and the transmission loss is suppressed. Moreover, the very-thick speaker
cable is also supported by setting the bore diameter of a clamp part to phi6mm.
Those with two line and bi-wiring connection are also possible for a speaker
The first rank circuit of discrete composition of having used
low-noise FET is adopted as a phone equalizer part. Moreover, high-quality
sound-ization is attained by the regulated power supply only for a phone
Both of the cartridges of MM/MC are supported by the change of a
The Pre out terminal is carried.
The SILMIC II
electrolytic condenser was begun and the part which the power radiator excellent
in the heat dissipation effect, OFC internal wiring material, an inactive gas
enclosure relay, high-quality sound carbon resistance, etc. selected carefully
The attachment-and-detachment type is adopted as a power
|<Power amplifier part>
|Output power (both channel drive)
|80W+80W (8 ohms, 20Hz - 20kHz, THD 0.07%)
160W+160W (4 ohms, 1kHz, THD 0.7%)
||0.01% (Output-power-3dB o'clock, 1kHz,
|Speaker output terminal
||Speaker AorB: 4ohms - 16ohms
Bi-wiring load: 4ohms - 16ohms
|Equalizer amplifier output
||Phono MM: 2.5mV/47kohm
Line: 140mV/70kohm (Source-Direct-off)
||1V (line system input [, such as CD, ] and
100mV of incoming signal o'clock)
||5Hz-100kHz+0 -3 dB
|Signal to noise ratio (A network)
terminal short circuit
|Phono MM: 91dB (at the time of a 5mV input)
Phono MC: 76dB (at the time of a 0.5mV input)
||Bass: ±8dB (100Hz)
Treble: ±8dB (10kHz)
||switched: Two lines, the sum total capacity
unswitched: One line, capacity 240W
|Power supply voltage
|Dimensions (a base, a knob, a terminal included )
||Width 434x height 180x depth of 478mm