300BS Shuguang Tubes Factory Matched Pair

300BS Shuguang Tubes Factory Matched Pair

300BS PAIR, Factory Matched, Mesh Anode, gold grid+pins. 300BS-B is compatible with 300B, direct heating cathode and medium power consumption. Two triodes can be used in the class A amplification. It is adapted to be used in audio frequency range which requires high output power of 100W. 300B-C long-life design, use pure graphite anode and plate power dissipation can reach up to 60W. If the design parameters are adjusted properly, single tube can use as class A amp, and can delivery output power higher than 20W.
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300BS Shuguang Tubes Factory Matched Pair

FACTORY MATCHED PAIR (2 matching 300BS-B tubes)
300B in vintage Globe-shape with Mesh-Plate.
Mesh plate coated with graphite, gold plated pins, grid wire and ceramic tube base

 

Specification


Filament voltage
Uf(DC): 5V
If(DC): 1.2A
Maximum ratings
Plate voltage: 480V
Plate dissipation power: 40W
 
Cathode current
For self-biasing voltage: 100 mA
For fixed-biasing voltage: 70 mA
Capacitances Input capacitance: 9PF
Output capacitance: 4.3PF
Muller capacitance: 15PF
 
DC parameters
Ua: 300V
-Ug:  60 V
Ia: 60mA
Gm: 5.5mA/V
Ri: 0.7 Kohm
u: 3.85
Pout: 6.6W

Manufacturer
Category
Tube types
High-End Hi-Fi
SKU
NN663/2
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