![]() Using LL1660AM/10mA amorphous core transformers (Aug. With LL1689AM transformer for ultimate performance (March 2009) Using LL1931 and LL1660AM/10mA transformers and LL1668 chokes (March 2009). Using LL7903 in a DAC output circuit (August 2010). A Hi-Resolution System with EMU 0404 USB,.Hi-End Class A-AB Hybrid Amplifier, ”End” version 2 (October 2021).Hi-End Class A-AB Hybrid Amplifier, ”End” version (December 2011).Hi-End Class A-AB Hybrid Amplifier, balanced (March 2011).Using LL1671/20mA interstage transformer (December 2010). (Old link to 4300B amplifier removed)(March 2011) The new (March 2011) reference 300B amplifier – 6W.Using LL7902 transformers for galvanic isolation, and EMU 0404USB + Behringer ECM8000 for measurements (March 2011) Some versions using the LL1684 in the output stage (June 2014) ![]() With LL1668 anode chokes in the tube stage (June 2014) Now with the newest added designs at the top of the list: His site contains a long list of designs using Lundahl transformers. ![]() Andrea Ciuffoli and his Audio Design Guide webpageĪndrea Ciuffoli is an Italian audiophile with quite an extensive web site at audiodesignguide ![]()
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