|AIR TIGHT ATC-3
||280,000 yen(release time - unknown)
|340,000 yen(at the time of high-class volume use)
Tube line control amplifier developed considering "making digital
sauce pure and reproducing densely" as a proposition in order to correspond to
SACD or DVD Audio.
Severe CR filter was adopted as the power-source
part, and mixing of a ham or a noise is eliminated thoroughly.
since it becomes an ideal power source, most adapted composition has been
realized by adopting a semiconductor positively.
In order to aim at
improvement in much more S/N ratio of a power supply circuit and a magnification
circuit, a printed circuit board is accepted in part, is used, and it serves as
arrangements line specification so that a signal may flow into a vacuum pipe
The flat amplifier circuits (line amplifier) are two steps of
NF systems driven by low impedance.
Moreover, the large output characteristic could be taken in the output
stage, and the SRPP circuit excellent in the low distorted characteristic
where input impedance is high and an Output load impedance is low is adopted
as it. This has realized stable operation and reduction in a distortion
covering a broadband.
The pipe with which "12AX7" (ECC83) selected carefully to the
first rank, and "12AU7" (ECC82) selected it carefully to the
2nd step is used for a vacuum pipe.
Adoption of the U.S. polypropylene capacitor was begun and the part selected
carefully is adopted as wiring material, such as using the copper wire
of 99.9999% (6 nine level) of purity, and the wiring material of Belden.
Moreover, detent type volume volume, metal tunic resistance, high rank
low noise carbon resistance, etc. have adopted the part selected carefully
in the prolonged audition and the torture test.
In order to suppress an
unnecessary vibration, the rigid high chassis is adopted.
There was a
high-class volume version as an option.
||Tube line control amplifier
||2V (rating), 15V (maximum)
|Output load impedance
||0.01% or less
||110mV (output 1V)
|Signal to noise ratio (IHF-A compensation)
||Less than 90dB
||Width 430x height 90x depth of 325mm