Psvane ACME 2A3 rør

2a3 udgangsrør fra Psvane´s bedste serie ACME!

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In the Acme Series, we have a number of patents,and also write a new chapter in our audio vacuum tube field: The very first style of high-power vacuum tube (Acme 845, 805, 211, etc.)with composite metal mesh screen pole structure in the world, graphite and metal wire mesh combined skillfully, make the sound very warm and transparent.Even at 600℃ temperature , the stress and thermal expansion coefficients of the two materials are in harmony, not only the sound is very steady, but also the power reserve and service life are also greatly increased; innovative the filament processing technology, which greatly improved the transmitting ability, possess of a voice so moving that it defied logic, such as immersive.

As the only one modern audio vacuum tube which with retro-onion glass shell styling (Acme 300B, 274B, 2a3, etc., ) all over the world, it is very beautiful from both inside and outside, tribute to the Centennial Classics; Benefit from improvement of the support structure after comprehensive consideration of the stress and harmonious vibration relationship , Acme 300B, 274B, 2a3, etc. using the suspended tube core structure, Let the sound free from shackles, full band filled with fresh music and rich details; in the design and manufacture of the tube seat, the Acme series is also very sophisticated use of all aluminum milling technology, with Teflon pedestal to achieve the perfection of the cup-holding radian, to achieve 360 °of art precipitation beauty.

Maximum Rating 
Ua…………………………    300         V
Pa…………………………    15           W
Rg 
with cathode bias………      0.5          MΩ
with fixed bias…………       0.05        MΩ
Direct Interelectrode capacitances
input……………………       7.5           PF
output……………………     16.5        PF
grid to plate……………       5.5           PF
Static parameter
Ua…………………………   300          V
-Ug…………………………  45            V
Ia…………………………     60           mA
Gm…………………………  5.25        mA/V
ri…………………………      0.8          kΩ
μ…………………………       4.2
Pout………………………… 3.5         W
Recommended Operating Conditions
 (reference value)
Class A1, single tube (fixed bias)
Ua…………………                250          V
-Ug……………………          45            V
RL……………………           2.5           kΩ
Ia(0)…………………            60            mA
Gm……………………          5.25         Ma/V
ri……………………              0.8           Kω
μ……………………               4.2
Pout……………………         3.5          W
Dtot……………………         5              %
Class AB1
                            push-full (fixed bias)
Ua……………    300              300          V
-Ug……………  62        Rk=780Ω V
RL……………   3                  5               kΩ
üg(pk)………     87                110          V
Ia(0)…………    80                80            mA
Ia(max.sig)…    140              100          mA
Pout……………15                10            W
Dtot…………… 2.5               5              %