This manufacturer is very well known in Italy where he lives and builds tube electronics of (if this still makes sense) extreme quality. The point with Mr D. is its originality in circuits and tubes never used or rarely seen in audio designs! I heard rumors that he produces alone and from scratch all the parts and labours of the various models. If this is true he must be considered a genius of tube gear. Just take a look to the photogallery page of his Web site:
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