The Integrated Amplifier which carries real 20bit S.L.C and an optical ClassA
The real 20-bit super linear converter of right-and-left
channel independence is carried in the D/A converter.
conversion is performed in response to the 20-bit 8 time oversampling signal
made from a digital filter.
Moreover, the difference among sampling
frequencies, such as CD, DAT, and satellite broadcasting, is identified
automatically in a digital multi-interface circuit. Furthermore, the internal
clock required for a recovery was made 2powerful PLL composition, and the
influence of Gitta (time fluctuation of a digital signal) is lost.
P.B.S (Penta Block Separated) chassis structure where the inside of amplifier
was divided into 5 blocks for every basic circuit is adopted,The magnetic flux
of a power-source block and the digital noise of a digital block and a display
block have prevented jumping in to other circuits.
Furthermore, interference with a very small signal part and the Taishin number part is solved, and an unnecessary fine vibration is simultaneously suppressed by the large improvement in chassis rigidity.
The optical ClassA circuit is newly carried in the power
This circuit is a Class-A circuit which uses an optical
element for transmission of the control signal sent to a bias circuit from a
bias control circuit, and has eliminated the mutual intervention between the
main signal system and a bias controlling circuit.
Moreover, a voltage magnification stage important for the drive of an electric power magnification stage adopts three steps of differential amplification, the first rank adopts ultra-low-noise FET, low-noise-izing and direct-current amplifier-ization are attained, and the final stage of power amplifier is using the high speed and the mass transistor of Pc80W by the parallel push pull.
The power-source part is
what heightened instant response capability.
A 6.3kg heavy weight class
large-sized shield power transformer is adopted as a power transformer, and the
pure dynamic circuit of adoption of high-class and large-sized a commutator and
an electrolytic condenser and 2-2 system which intercepts a power-source noise
The wide-range MC/MM equalizer amplifier which adopted
direct-current servo system is carried.
The Source-Direct switch which
can link all the input sauce with power amplifier directly, broadband real-time
tone control and the speaker terminal change of a protection relay system, and
the reset type high-speed protection circuit are carried.
There were a
gold type and a black type with side wood.
||Digital multi-interface loading Integrated
|<Power amplifier part (Line
terminal -> SP terminal)>
|Output power (20Hz - 20kHz)
||CD input: 150mV/30kohm
||0.004% (20Hz - 20kHz, 55W, 8ohm)
||Below measurement full limits
||5Hz - 100kHz (Output 55W, 0.5%, 8ohms)
|Line-in frequency response
||4Hz - 150kHz, and +0 -3 dB (outputs 1W and
|Output load impedance
||0.1ohm or less
||Speaker: AorB:6-16ohm, A+B:12-16ohm
Headset-jack maximum except take-off: 430mW (8ohms), 8-400-ohm conformity
|<A digital interface / the DAC
|A digital-input/output level / impedance
||0.5 Vp-p/75ohm same axle
input: Two lines
|Frequency response (0dB)
|Signal to noise ratio (dB for zero, 1kHz)
|Dynamic range (1kHz)
|THD (0dB, 1kHz)
||Phono MM: 2.5mV/47kohm
CD, AUX, Tuner, Tape1, 2PB:150mV/30kohm
|The maximum except take-off/Output power
||0.002% (MM, 1kHz, 8V)
|Equalizer (RIAA) deflection
||20Hz-50kHz}0.3dB (MC IN)
|Signal to noise ratio
(an input short circuit, the auditory sensation weighting A)
Phono MC: 62dB (at the
time of a 0.25mV input)
|Tone control characteristic
||Bass: }8dB (100Hz)
Treble: }8dB (10kHz)
||16Hz, -12 dB/oct
|Loudness control characteristic
(Electrical Appliance and Material Control Law)
(Includeds, such as a foot, a
knob, and a terminal)
|PMA-890D: Width 434x height 180x depth of
PMA-890DG: Width 470x height 181x depth of 420mm