He must have reached retirement age by now,OTH perhaps his latest models have not sold enough.
He was certainly great for Marantz’s marketing but what is he known for most in circuit design?
I went to one if it’s launch dems at a show with KI spinning the discs. Marantz pre and monoblocs through Tannoy TD12s.Products personally tuned by Ken Ishiwata, and bearing his initials, have long been regarded as leaders in their class. These have included hi-fi icons such as the CD63mkII KI and PM66KI, and more recently the renowned KI Ruby series that commemorated Ken’s 40th anniversary at Marantz
Notice the CD7 was not mentioned in this press releases. It might be the greatest CD player ever made. It was certainly the best that ever came out of Marantz.
If he came to Europe in 1968 to Pioneer, his DOB may be ~1949, so 70 years old now.
Possibly unhappy with the new owners?
That age for Japanese people is equal to 35 in Europe, his a young pup.