The Audio Design Guide
Andrea Ciuffoli and his Audio Design Guide webpage

Andrea Ciuffoli is an Italian audiophile with quite an extensive web site at audiodesignguide

His site contains a long list of designs using Lundahl transformers. Now with the newest added designs at the top of the list:


    • Hybrid power supply using both diodes and tube rectifiers to get the best of the two worlds. We think this is excellent as it works very well with our mains transformers.
    • Tube output transformer selection list. This sheet with tables, provided by Andrea Ciuffoli, is a guide to find the most appropriate Lundahl output (and interstage) transformers to selected tubes.

    Who is Andrea Ciuffoli

    Andrea Ciuffoli is a software engineer, working with Internet technologies. He is involved in the Audio Hi End DIY since 20 years ago. His aim is to search for new solutions, to try new ideas and to look for any improvement. He is not involved with any financial business in the field, the Andrea’s wish is to improve and share his know-how both in the Electroacoustics and in Electronics. Being a Spice expert most of his conceptual work is CAD oriented, such an expertise, put together with an excellent ability in crafting ’fast’ his devices, gives him the possibility to cover all the aspects of the hobby.

    (by Francesco Pintavalle)

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