When the audio transformer designer designs a new transformer, he thinks about
combination with others transformer his company made.
Sakuma uses only TAMURA to avoid trouble. If his amplifier makes trouble , it is not Tamura's cause.
So Sakuma only must try to find his mistake.
Amplifier builders know even a power transformer has its own tone.
TAMURA is the only company that can supply all the many kinds of transformers mounted on a Sakuma-designed amplifier. This is a company that has kept its own tone for more than a half century.
In fact, we know Mr. Sakuma's design seems unbelievable.
Mr. Kei Ikeda, the top authority among Japanese audiophiles said "People should not talk badly about Sakuma's methods. He finds ideas from deeper inspiration than we can imagine".
After his words, the Japanese amplifier builders stopped their criticism."