2x VINTAGE RARE MELZ 6N8S / 1578 / 6SN7 / ECC32 USSR METAL BASE, MATCHED PAIR. 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= 9.0 mA; S1=2.2. Ia2= 8.2 mA; S2=2.35. Ia1= 9.0 mA; S1=2.85. Ia2= 8.2 mA; S2=2.5. 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.
New + slightly used, tested - 100%, matched pair. 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.