Which tube is this

I have two tubes that are very similar to the ECC8100, but the base with the same dimensions as the noval, has 10 pins instead of 9. Looking inside, the connections of the first section is the same as the ECC8100. I can´t read the number anymore. It is almost sure the same internal systemm as the ECC8100

Anyone has an idea what tube this is?

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Hello Nicolaas van Dijk,

maybe your tube is an ECC2000

Best regards

Giovanni Cucuzzella

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Thank you very much Giovani, I am sure it is. The connections and the picture are the same. It is a pitty I can´t test, my tube tester doesn´t have this base

Kind regards

Nico

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