Hi Tbg,
I believe it uses the TI(Burr Brown) 1794. The key to its sucess IMO is the ultra simple discrete analog circuit(Yamamoto avoids Op amp/NFB at all cost he says). Minimal use of filters and his emphasis on power supply and heavy duty transformer. He placed attention on implementing a very minimalist design which he feels yields a natural sound quality. It's exceptionally organic and lively.
Charles,
I believe it uses the TI(Burr Brown) 1794. The key to its sucess IMO is the ultra simple discrete analog circuit(Yamamoto avoids Op amp/NFB at all cost he says). Minimal use of filters and his emphasis on power supply and heavy duty transformer. He placed attention on implementing a very minimalist design which he feels yields a natural sound quality. It's exceptionally organic and lively.
Charles,