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1PC Psvane Treasure 274B-T Mark II Premium Grade Vacuum Tubes for AMP

TOPT000P274BTII
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Psvane Treasure 274B-T Mark II Premium Grade Vacuum Tubes for AMP
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$142.99
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1. Free shipping with tracking number.
2. Price is for 1 pc, 
   buy 2 pcs, we will send 1 matched pair,
   buy 4pcs, we will send 2 matched pairS, IF need one matched quad, please leave us a message, we can send matched quad, thank you!


1PC Psvane Treasure 274B-T Mark II Premium Grade Vacuum Tubes for AMP

Item specifics
Type:    Audio Tube
Model:    274B-T Mark II Premium
Substition: 274 274B
Brand:    PSVANE
Application: tube amplifier
Socket: 4 pins 
Material:Glass

Packaging Details
Unit Type: 1PC Psvane Treasure 274B-T Mark II 
 
 


 
Datasheet:
 

Glass shell eight feet directly heated full-wave rectifier,274B is very similar with 5U4G and 5Z3P, which can be replaced by each other.

Heater

Uf………………5V
If…………… 2.5A

 Maximum Rating

anode inverse peak voltage……………1550V
anode peak current        ………750mA

 

Recommend working condition

 Anode supply voltage             2×500V

Each arm impedance               75Ω

load impedance                   2000Ω

Filter capacitor                 4μF

Rectifier current                ≧220mA



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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