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SEDHT amp - decisions decisions

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Recently lucked into some metalwork that I realised would make an excellent basis for a SEDHT amp. I have all the other bits (transformers etc) but am torn as to what output tubes to use. The candidates are : 211, 805, 845 and 212. I have loads of all of them. If I aim for around 40-50 watts the field narrows to 212 and 805 (212 in A1 or 805 in A2). Anyone see either of these having any outstanding advantage over the other?.
Cheers
M
 
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