A
stereo pre-main amp with Class A or Class AB choice. In Class A it produces 20
W RMS per channel; in Class AB it gives 80 W RMS per channel.
It
has a highly original low TIM design, DC concept and all stage pp circuits. The
MC amp and the phono Equalizer are designed to minimize TIM. By reducing the
impedance of Phono Eq elements, we have given the PM5 a signal-to-noise ratio
of 86 dB. In the choice of parts, in design and in materials first priority has
been given to producing superb sound. Whatever it may cost.
In
PM-5, it has a whole page perfect push pull DC amplifier stream composition
that TIM distortion should be banished from all the corners in amplifier, and a
nakedness property is improved. Even
if it does not apply a lot of NFB, the TIM and the static characteristics are
improved.
In
order to raise the operational stability of a power transistor, a newly
developed heat-pipe scheme is adopted as a heat-dissipation organization. Since
heat is drawn out of a circuitry and it cools by a radiator, a transistor can
be arranged in an ideal location and simple-izing of a circuitry and a
Low-noise-izing are raised. Moreover,
the mass capacitor developed for audios and the powerful power transformer
which was filled up with the special resin, took heat-resistant measures and
was miniaturized are adopted as a power-source part.
Especially
a phone amplifier block is the low distortion and high S/N ratio design
sumptuously using a transistor. And
the straight DC circuitry to which phone amplifier is direct connected to the
power stage is taken in, and the quality of the disk play is raised.
Furthermore,
highly precise MC head amplifier and a subsonic-speed circuitry are built in
phone amplifier.
A
subsonic speed is used only to an equalizer and is attaining simple-ization of
other functions.
A
tone control carries out "the ±8dB variable" of "100Hz"
which is a right-and-left standalone version which a fine balance can adjust,
and the "10kHz." And adoption of a highly precise volume has realized
the entire flat response at the middle point of a thumb.
The
peek power meter of a window is suddenly equipped in the center of the front
panel.
It
differs from the bar window, and since light emitting diode displays power on a
point in a pure Class-A and AB class, clear moreover, the Direct reading of the
exact output can be carried out.
Moreover,
under meter, the dubbing circuitry in which a mutual sound recording is
possible, and two speakers hear it from the deck to the deck, it compares, and
abundant functionalities which can perform a simultaneous play, such as a
speaker multiple contact switch, are incorporated. 
Specifications:
Class B
Power:
2x 80W
(20Hz...20kHz, 8 Ω, 0,025%THD);
2x
100W (20Hz...20kHz, 4 Ω, 0,05%THD)
Class A
Power:
2x 20W
(20Hz...20kHz, 8 Ω, 0,015%THD)
Bandwidth: 7 Hz...50 kHz
Frequency
Response:
Aux, Tape
: 5 Hz...100 kHz (+0dB, -2dB)
Riaa : 20 Hz...20 kHz (±0,2dB)
Power
Bandwidth: 5 Hz...90 kHz
Intermodulation
Distortion: 0,015% (8 Ω )
Damping
Factor: 100 (8 Ohm)
Inputs:
Phono MM
: 2,2 mV / 27 / 47 / 100 kOhm
Phono MC
: 220 µV / 75 Ohm
Aux, Tape
; 150 mV / 40 kOhm
Maximum
Input:
Phono MM
: 220 mV (1kHz)
Phono MC
: 20 mV (1kHz)
S/N Ratio
(IHF-A) :
Phono MM
: 86 dB
Phono MC
: 70 dB
Aux, Tape
: 108 dB
Power
Consumption: 350 W
Dimensions: 416 x 146 x 332 mm
Weight: 13 kg.