1x VINTAGE RARE MELZ 6N8S / 1578 / 6SN7 / ECC32 USSR METAL BASE, TESTED - 100%. The tubes were tested on L3-3 tube-tester. Un=6.3 V; Uc1=-8V; Ua=250 V. Output parameters: Ia= 9 +/- 3.5 mA; S=2.6 +/- 0.525.
MA/V - it is 100% by. Ia1= 7.0 mA; S1=2.5.Ia2= 6.9 mA; S2=2.5. Ia1= 7.8 mA; S1=2.1. Ia2= 9.5 mA; S2=2.6. Ia1= 13.0 mA; S1=3.0.
Ia2= 10.8 mA; S2=2.9. Cathode type oxide, indirect heating. Filament voltage, V 6,3.
Filament current, A 0,55-0,65. Anode current, A 0,0055-0,0115.Anode power, W 2,75. Grid1 voltage, V minus 8. Steepness, mA/V 2,1-3,1. Reverse grid current, uA 2. Must be sent to Ukraine.
I can guarantee you complete satisfaction with all my products. If you receive an item you ordered is received damaged or defective, I will send replacement item.Item for returning must have the original tags and packing, otherwise it won't be accepted. It usually takes 10-24 days to deliver by air! This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "thebestsound" and is located in this country: UA. This item can be shipped worldwide.