Audio Database


220,000yen(around the 1996 time)

The Integrated Amplifier which inherited the design philosophy of POA-S1 and PMA-S1 and aimed at coexistence under [ high order ] delicacy and forcibleness.

The large current type magnification element UHC MOS is adopted as a magnification element.
Current supply capability is improved a bipolar transistor and more than equivalent, and UHC MOS serves as an element which also has a sound quality merit of MOS FET with it.
Furthermore, in order to pull out the capability of this element to the maximum extent, the cascode bootstrap system is adopted.
With the cascode bootstrap system, ideal load to the electric power magnification stage was realized, and simple and straight composition is attained.
Furthermore, the sauce resistance which was the cause which soils sound quality is also eliminated taking advantage of the stability of UHC MOS.

A large-sized power transformer and a large-sized block capacitor are adopted as a power-source part, and the power and the sense of stability of an UHC single push pull circuit are raised more.

The rigid high sheet steel was adopted as the chassis, and copper coating excellent in the shield profit cause has been performed.
Furthermore, a sintered alloy insulator is directly fixed to a chassis, and vibrationproofing structure is raised.

The Phono equalizer is equivalent to both the types of MM/MC.

In order to attain simple & straight-ization of a signal course, when not using tone control, the tone-defeat switch which separates a tone circuit completely from a signal course, and enables a straight play is carried.


Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Output power 100W+100W (4ohms)
50W+50W (8 ohms, 20Hz - 20kHz)
THD 0.07% (1kHz, 8ohms)
Speaker output terminal 4ohm-16ohm
<Preamplifier part>
Input sensitivity/impedance Phono MM: 2.5mV/47kohm
Phono MC: 200 microvolts/100 ohms
Line: 150mV/25kohm
Equalizer amplifier output Rec Out: 150mV of Output powers
RIAA deflection Phono: 20Hz-20kHz±0.3dB
Signal to noise ratio Phono MM:91dB
Phono MC:76dB
Power supply voltage AC100V, 50Hz/60Hz
Power consumption 160W
Dimensions Width 434x height 137x depth of 365mm
Weight 15.2kg