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1 Matched Pair Psvane 300B-T Mark II Classic tube Amplifier diy 300B

TOPT000300BTMARKII
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Psvane 300B-T Mark II Classic tube Amplifier diy 300B
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$389.99
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1. Free shipping with tracking number.
2. Price is for one  matched pair.
  if you need more, please contact us for discount,
our email address:
salesmanager@youdaelectronics.com



1 Matched Pair Psvane 300B-T Mark II Classic tube Amplifier diy 300B

  

300B-TII is directly-heated type cathode triode, used as class A1. In audio amplifier it suits for the condition that the output power is 10W.

 

Heater
Uf(DC)………………5V 
If(DC) …………… 1.2A 

Maximum Rating

Ua……………480V 
Pa………40W 

Ik
with cathode bias………………100 mA 
with fixed bias……………70 mA

Direct Interelectrode Capacitances
input……………9PF 
output……………4.3PF 
grid to plate……………15PF

Static parameter


Ua……………………300V 
-Ug………………… 60V 
Ia……………………60mA 
Gm……………………5.5mA/V 
ri……………………0.7 KΩ 
u ……………………3.85 
Pout…………………6.6W 

typical workong parameter
aodio amplifier 
class A1

Ua -Ug Ia RL Pout 2nd

V V mA Ω W db 
200 42 30 2000 3 20 
200 39 40 2500 2.6 26 
250 55 30 2000 4.9 18 
250 52 40 3000 4.0 26 
250 50 50 2500 4.4 26 
250 48 60 2000 4.7 26 
250 48 60 2700 4.1 30 
250 45 80 1500 5.0 26 
300 65 40 2500 6.7 20 
300 63 50 2000 7.2 21 
300 63 50 3000 6.1 26 
300 61 60 2400 6.6 26 
300 58 80 1700 7.5 26 
350 76 50 3600 7.8 26 
350 74 60 2000 10.2 21 
350 74 60 3000 8.3 26 
350 74 60 4000 7.0 30 
350 71 80 2200 9.6 26 
400 91 40 5000 8.4 26 
400 89 50 1000 11.5 21 
400 89 50 4000 9.4 25 
400 87 60 3500 10.5 26 
400 84 80 2500 12.5 25 
450 104 40 6000 9.5 26 
450 102 50 5000 10.7

 
Package include:

2 pcs matched 300B-T Mark II Classic tubes 












Factory history and overview


Changsha Hengyang Electronics Co., Ltd. specializes in R & D and the sales of audio tubes. All the items have passed the ISO9000 Quality System Certification. In May 2011, Changsha Hengyang Electronics CO., LTD was founded;

In July 2011, the manufacturing base was established in Changsha;
In August 2011, PSVANE’s first tube----845 was rolled off;

In September 2011, PSVANE 845 series began to supply our products to some main tube amplifier enterprises at home and abroad.

In October 2011, Changsha Hengyang Electronics Co., Ltd. wholly owned acquisition of a famous tube production enterprise in southern China, which sent shock waves through the industry.

In November 2011, PSVANE HIFI series (300B, 2A3, EL34, KT88, 5881, 6SN7, 274B and so on) were officially rolled off.

In November 2011, the company got the ability to develop and produce three series that cover more than 50 types of tubes. The whole strength and production-marketing scale are among the world’s top four, which is unprecedented in the industry. The foreign media said that “the future of the world’s tubes is in China, and the future of Chinese tubes is in Hengyang”.

In November 2011, PSVANE Reproducing Classic Series came to the market overseas and caused a sensation. 

In November 2011, PSVANE HIFI series fully entered to the retailing market aboard and well received by customers from the middle and low-end market because it has better sound, appearance, stability and cost performance than other brands. 

In May 2014, Changsha Hengyang Electronics Co., Ltd entered into Jiahai Industrial Park, which means has turned into a new page. 


















 
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