EXPIRED: FS: KR 300B (pair)

[Ihearmusic]

Further information:

They come with one year warranty on the tubes.

Filament specifications: DC/AC Voltage 5 V
 DC/AC Current 1.2 A
Amplification Factor 3.9
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 Power Amplifier class A1
Maximum
DC Plate Voltage 550 V
Dissipation 50 W
DC Plate Current 120 mA
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DC Plate Voltage 450 V
DC Plate Current 100 mA
Grid Voltage -90 V
Plate Resistance 630 ohm
Transconductance 6,2 mA/V
Photos:

 

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