Factory tested
Psvane ranks among the best-respected audiophile tubes on the globe. Their designs have established a benchmark for clean and accurate sound reproduction, along with a build quality that matches their sonic performance.
811A is direct-heated type
thorium tungsten cathode high µ triode, can be used as high-frequency
oscillation power amplification.
811 is similar to 811A, they can be exchanged each other.
Heater
Uf--------------------------------------6.3 V
If---------------------------------------4 A
Maximum Rating
Ua--------------------------------------1250 V
Ia---------------------------------------125 mA
Pa--------------------------------------40W
grid current---------------------------------------50 mA
Operating frequency and Ua
When the operating frequency above 30MC, Ua and anode input power should be reduced as follows:
Operating frequency(MC) Ua and anode input power
60 89%
80 70%
100 55%
When it is in constant
working, the anode should not be allowed to have slight red; when in
interrupted working, it should only be allowed to have perceptible
slight red.
Direct Interelectrode Capacitances
Input--------------------------------------5.5 PF
output--------------------------------------0.6 PF
Grid to plate……………………………………………..5.5 PF
Static parameter:
Ua……………………………………………………….2000 V
-Ug……………………………………………………...2 V
Ia………………………………………………………26 mA
µ(Ia=20mA)……………………………………..160
Maximum rating in other operating conditions
R-F power amplifier or oscillation, C amplifier (CW)
CCS ICAS
Ua………………………………….1250 1500 V
Ia……………………………………175 175 Ma
Pa…………………………………..45 65 W
Pa (in)……………………………..175 260 W
Ug…………………………………-200 -200 V
Ig…………………………………..55 50 mA
C amplifier anode-modulation, R-F power amplifier
CCS ICAS
Ua…………………………………1000 1250 V
Ia…………………………………..125 150 mA
Pa………………………………….30 45 W
Pa (in)……………………………115 175 W
Ug…………………………………-200 -200 V
Ig……………………………………50 50 mA
CCS: constant working
ICAS: interrupted working
A-F power amplifier or oscillation
B amplifier, grid driving
Maximum Rating
CCS ICAS
Ua………………………………………………1250 1500 V
Ia (max. sig)……………………………….175 175 mA
Pa………………………………………………45 65 W
Pa (in) (max. sig)……………………165 235 W
Recommended operating condition (Reference value)
(The value of two tubes)
CCS ICAS
Ua……………………………………………1250 1500 V
Ug…………………………………………….0 -4.5 V
Ia (0)…………………………………………50 32 mA
Ia (max .sig)……………………………..260 313 Ma
Ũg (pk)……………………………………145 170 V
Pd (max. sig)…………………………..3.8 4.4 W
RL (a-a)……………………………………12.4 12.4 kΩ
Pout (max. sig)…………………………235 340 W
NOTE:The buyer is responsible for any applicable import duties and local taxes. Please verify with your customs before making your purchase.
1. All payment must be prepaid.
2. We only accpet payment via paypal. Please kindly check if you can do the payment via paypal before placing an order.
1.
We are not responsible for undeliverable address. We reserve the right
to charge the shipping fee again for returned item due to wrong address.
2.
Item are generally shipping out within 2 working days after your
payment have been cleared. We ship on Monday to Friday (excluding Public
Holidays).
3. Orders from the HongKong or Shenzhen will all be shipped out via the post postal.
4. We Ship to Worldwide, except the excluding country. Most delivered 10-30 business days.
1. We offer 30 days money back guarantee return policy.
2. We will responsible for the postage of damaged replacements. Refund will be made upon receipt of the returned item.
