The JJ 300B are precision matched at the factory. They come with a hand filled test sheet. These are a great alternative to the higher priced and hard-to-find 300B tubes.
The best 300B of new production kinds, gives very sweet and detailed sound. Selection and matching service included in the price.
R. F. TRIODE
Base: 4-PIN CERAMIC BASE
Uf = 5 V
If = ca 1,3 A
Typical characteristic:
Ua = 300 V
Ug1 = -61 V
Ia = 60 mA
S = 5,5 mA/V
Ri = 700 Ω
μ = 3,85
more information
Data sheets 300B:
