|AIR TIGHT ATM-2
|650,000 yen(release time - unknown)
Vacuum-pipe power amplifier announced as the 2nd phase of power amplifier of
KT-88 is adopted as an output pipe.
follower circuit is adopted as a driver stage. The driver by large 12BH7A of a
plate loss supplies the powerful drive voltage which is a low Output load
impedance and does not have ripple distortion to the power pipe.
Moreover, the driver and the power pipe are combination which eliminated the capacitor directly. Therefore, the stable drive without a transient distortion is realized.
The meter and selector switch for output pipe bias current adjustment
are carried in the front panel, and, thereby, the optimal operation point of an
output pipe can be checked. Moreover, when gap of bias arises, half-fixed VR on
a chassis can adjust easily.
A printed circuit board is eliminated and
high-quality sound-ization is attained by performing an one-point one-point
That which is called at Tamura which has the
transformer technology of passing the standard of the Defense Agency, and has a
track record high also as an object for broadcasting stations is adopted as an
An input-proof is a large-sized type beyond 100W, and
also the constant loss is low with 0.25dB. The special Orient core is adopted as
the core of a transformer.
The winding wire type large-sized (30 phi) encapsulated type is altogether
adopted as half-fixed VR. moreover, a socket -- 8P -- the product made
from a Lux, and 9P -- the product made from cinch, and the first rank --
9P of a pipe has adopted the reliable part, such as adopting gilding made
a front input does not go via a shield line
-- the first rank -- direct connection is possible in a pipe.
It can reproduce by using the Attenuator of a front, without connecting
||Stereo power amplifier
||0.07% or less (1kHz, 1W)
1.0% or less
||Less than [ 20Hz-20kHz±1dB ] (80W)
|Signal to noise ratio
||100dB (IHF-A, input short-circuit)
|An attached mechanism
Bias adjustment mechanism
||12AX7A: Two pieces
12AU7A: Two pieces
12BH7A: Two pieces
|Power supply voltage
||About 300W (Electrical Appliance and
Material Control Law)
||Width 415x height 223x depth of 380mm