In 1936, he founded the Fukuin Shokai Denki Seisakusho company in Osaka, whose name roughly translates to "Blessed Sound Electric Company" or "Gospel Electric Company", owing to Matsumoto's Christian faith and belief that his electronic products could help in missionary works.
Matsumoto relocated to Tokyo in 1938 and started a small factory that repaired radios and speakers.
After World War II, the company expanded rapidly.
The brother of Seiya, Kanya Matsumoto was very technical, just as his father.
In 1961 the name 'Pioneer' was changed to 'Pioneer Electronic Corporation', and it was listed on the Tokyo Stock Exchange.