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Psvane WE205D

Psvane WE205D

Chinese Psvane WE205D.
205D tube type was originally developed by Western Electric in the early part of 20th century. It’s a direct heated triode tube like 300B, but with lower output and extremely accurate low voltage amplification, greatest fidelity and linearity across all frequencies in telephony. Like 300B, 205D tube wasn’t originally designed for hi-fi use. Western Electric didn’t license 205D use to any other companies, so this tube model was never widely used and hence extremely hard to find today. A pair of New-old-stock WE205D original tubes can fetch over $2000 per pair on the hi-fi market today and it’s extremely rare to come by.
The difference between WE205D and WE205D-L is pin, WE205D needs to match original WE-style tube socket, while WE205D-L only need flat quadrangle tube socket(like 300B socket).

Psvane WE205D
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Description

Psvane WE205D

Psvane WE205D

Psvane WE205D

Psvane WE205D

Psvane WE205D

The difference between WE205D and WE205D-L is pin, WE205D needs to match original WE-style tube socket, while WE205D-L only need flat quadrangle tube socket.

Electrical parameter rating value unit
Direct Interelectrode Capacitances
Input 4.8 uuF
Output 5.2 uuF
Grid to plate ≤ 3.3 uuF

Typical operating parameter
Heater voltage 4.5 V
Heater current 1.6 A
Ua 300 V
Ug -30 V
Ia 8 mA
Amplification coefficient 6.7
Pout ≥ 800 mW
Electrical parameter—absolute maximum ratings minimum maximum unit
Heater voltage 4 5 V
Ua – 400 V
Pa – 15 W
Ia – 50 mA

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