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Pair of Type 456 Tubes

Hello, I have one pair of 45 tubes, brand is Sylvania, green label. Good condition but Ive not measured them, I think they are 80% minimum (I have built an amp with them). But I dont have much money and it is not a good idea to build an amp when you have just 1 pair of tubes.
I will be happier to change these tubes for pair of some good output transformers, single ended, 5k and 100mA current will be great. For 4 ohms speakers.
An externally hosted image should be here but it was not working when we last tested it.
Best regards, Michal