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.