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Later, Dunlop bought the FF trademarks and began manufacturing the FF as a reissue. Dunlop actually arranged for new manufactured "NKT275" germanium devices to be made for them, and is shipping these in its latest reissues.
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De toute façon les orginales avaient l'un ou l'autre, et surement encore d'autres types de transistors. C'est surtout la sélection des transistors qui est importante.