$200 made in Slovak Republic - цена за квартет. Here's what JJ says about this tube:
BEAM PENTODE
This is the octal, non-plate cap version of EL509/6KG6 from JJ. It can handle 700V and 42W, and has ruggedly built cathode that can pump 500mA. EL509S is a modified version of the original EL509/EL519. Does not have a top plate-cap and has an 8-pin octal base. Can handle 700V and 42W plate dissipation. Popular in OTL applications. Please note that this is an 8 pin tube that has no plate cap. It is not interchangeable with NOS EL509s. 6P45S = EL509 = 6KG6 tube.
Георгий, Одесса 0503160573 / 0685586444